| C & A Products | C & D Batteries | C & D Power Systems | C & D TECHNOLOGIES INC |
| C & M | C Can Power Systems | C Mac Energy & Systems | C On Electronics |
| C Sys Labs | C&c Power | C&d Power Electronics Div | C&d Powercom Div |
| C&d Technologies | C-Cor | C-E Canada | C-E Invalco |
| C-E Power Systems | C-E Tyler | C-R-O Engineering | C. Chauvin Arnoux |
| C.A. Controls | C.Ap.El. | C.B. Ferrari | C.C.I. |
| C.C.M. Of Minnesota | C.C.T. | C.D.I. | C.E.A.I. |
| C.E.B. | C.E.G. | C.E.M. | C.F.E.I. |
| C.G.R. | C.H. Symington | C.H.T.F. | C.I.M. |
| C.N.I. | C.O.E.L. | C.P.Ap | C.P.S. |
| C0Mpumotor | CABLETRON | CALIFORNIA | CARDIO |
| CASE ANITE CRAY C & W | CAT | CDI | CE |
| CEAG | CEC | CED Corp | CELAB |
| CELESTICA | CHEROKEE | CHLORIDE | CHOICE COMPUTERS |
| CISCO | CLONE | CNI | COBAS MIRA |
| CODEN | COMPAM | COMPAQ | COMPAQ CPX 1 |
| COMPUTER PRODUCTS ARTESYN | COMPUTER REPAIR CENTER | CONDOR | CONTINENTAL SYSTEMS INC |
| CONVEL | CONVERTER CONCEPTS | CORNING | CORTECH |
| COSEL | COUTANT LAMBDA | COUTANT LAMBDA MEMIC | COUTANT LAMBDA NEMIC |
| COUTANT LAMBDA QUALIDYNE | COUTANT LAMDA NEMIC | COUTANTLAMBDA | CPS |
| CRAFTEC | CROFT | CROSSFIELD ELECTRONICS | CT Systems |
| Cab | Cabel | Cabel Electronics | Cabinplant |
| Cable | Cableform | Cabletest | Cabur |
| Cac | Cacr-Srca | Cactus | Cal Controls |
| Calco Mfg | Calex | Calex Mfg Co | California Dc |
| California Elect. | California Instruments | Calterm Electronics | Cam |
| CamacXTC | Camco | Camel Robot | Cameo |
| Campbell Grinder | Campbell Machines | Campini | Can-Tron |
| Canadian Instrument | Canastra | Canastra Ag | Candy Controls |
| Cannon | Canon | Canongate Technology | Canopy |
| Canron | Cansec Systems | Capel | Capital Controls |
| Capmatic | Capozzo | Capp | Card |
| Cardinal | Cardinal Scale | Cardkey Systems | Cargill |
| Caritronics | Carl Baasel | Carl E. Holmes Co. | Carl Zeiss |
| Carlen Controls | Carlo Gavazzi | Carnes | Carol Super Vultron |
| Carotron | Carrago | Carrier | Carriere |
| Carroll Touch | Carter | Carter-Day Company | Cartessa |
| Cary | Cashin | Casi-Rusco | Cassco |
| Cassoli | Castle | Cat 325 | Catalina |
| Catco | Catel | Catel Communications | Caterpillar |
| Cattron | Cavenaghi & Ridolfi | Cbm Electronics | Cbr |
| Cbw Automation | Ccc | Cci | Ccs |
| Cd Systems | Cda | Cds | Ceag Ag |
| Cecil | Ceco | Ceda | Ceeco |
| Ceg Automation | Cegelec | Cehco | Cei |
| Ceia | Cel-Tec | Celes | Celesco |
| Celestica | Celestica International | Celestica Power Systems | Celetronix |
| Cell Con | Celtek | Cem | Cemb |
| Cen Electronics | Cenith Control | Centech | Centennial |
| Central Data | Central Electric | Centralp | Centroid |
| Centronic | Centronics | Centurion Instrument | Century |
| Century Lighting | Cera-Mat II | Cerberus Pyrotronics | Cermetek |
| Ceronix | Certainteed | Cerutti | Cessna |
| Cet | Cet Technology | Chadwick | Chadwick Helmuth |
| Chadwick-Helmuth | Challenge | Chamberlaine | Chambon |
| Channel Products | Channel Well Technology | Chaoyang Power Supply | Charles Industries |
| Charmilles | Charmilles Technologies | Chase | Chaser |
| Chatillon | Chatillon Centurion | Chauffe | Chemap Ag |
| Chemcut Corporation | Chemetron | Chemsultants International | Chemtrix |
| Cheops | Cherokee | Cherokee Europe Llc | Cherokee International |
| Cherry | Cherry-Burrell | Chesebrough | Cheshire |
| Chessell | Chicago Dryer | Chicago Laser Sys. | Chicago Pnuematic |
| Chick Master | China Compex Electric Corporation | Chino | Chloride Electro |
| Chloride Inc. | Chloride Power Protection | Chloride Pyrotector | Chore-Time |
| Chred | Christie | Christie Electric | Christie Electric Corp |
| Chroma Ate | Chroma Systems Solutions | Chromalock | Chromalox |
| Chronos Richardson | Chrontrol Corp. | Chubb | Chular |
| Chung I Machine | Chunghwa | Chuo Electronics | Churchill |
| Cidm | Cimco | Cimpac | Cincinnati |
| Cincinnati Dynacomp | Cincinnati Inc | Cincinnati Inc. | Cincinnati Milacron |
| Cincinnati Milaron | Cincinnati Test Sys | Cincinnati Time | Cintex |
| Circle Technology | Circom | Circuit Board | Circuit Logic |
| Cirtek | Citel | Citizen | Cito Products |
| Civiemme | Ckd Corporation | Clamco | Clantech |
| Clark | Clark Door | Clark-Reliance | Clarke |
| Clarke & Lewis | Clarke Hess Corp | Clarke-Chapman | Clarke-Hess |
| Clarostat | Clary Corp | Clary Corporation | Clay Adams |
| Clayton Mfg. Co. | Cle | Cleaver Brooks | Clerici Automazione |
| Cleveland Controls | Cleveland Electric | Cleveland Gear | Cleveland Machine |
| Cleveland Machine Control | Cleveland-Kidder | Clinton Electronics Corp. | Clinton Industries |
| Clinton Instrument | Clinton Power | Clipper Machines | Clm |
| Clrt Elettronica | Club Car | Clyde Iron | Cm Electronics |
| Cmi | Cmk | Cms | Cni |
| Cober Electronics | Cocker | Coe Mfg. | Coelind |
| Coeling | Coen | Cognex | Cognitive |
| Coherent | Coherent General | Cohu | Coil Technology |
| Coils | Colbern Systems | Coldwatt | Cole-Parmer |
| Coleman | Collamat | Collectrol Timers | Collinear Research |
| Collins | Collmer Semiconductor | Colorflow | Colortronic |
| Colt Industries | Coltec Quincy | Coltron | Columbia Contech |
| Columbia Electric | Columbia Machine | Columbia Research | Com 10 |
| Comark | Comat | Comatec | Comau |
| Combina | Combustion Eng. | Comco | Comelta |
| Comelz | Command Systems | Commande Moteurs | Commander |
| Commerce Corporation | Commerial Sheari | Compair | Compaq |
| Compaq Computer | Compex | Composite Modules | Compower Corporation |
| Comptrol | Comptronic | Compu-Trol | Compudyne |
| Compufoam | Compumotor | Compur | Compuspeak |
| Computechnic | Computer Automation | Computer Boards Inc. | Computer Conversions |
| Computer Designs | Computer Dynamics | Computer Identics | Computer Power |
| Computer Power Group | Computer Process | Computer Products | Computer Signamation |
| Computer Svc | Computer Technology | Computerized Cutters | Computerized Security Systems |
| Computerwise | Computron | Comsip Delphi | Comstar |
| Comtec | Comtrol | Con-E-Co | Conair |
| Conair Franklin | Conar | Conax | Condair |
| Condec | Condor | Condor Dc Power Supplies | Condux |
| Cone Blanchard Mach. | Conel | Conitec | Conlog |
| Conn-Trols Inc | Conn-Trols Inc. | Connect Tech Inc. | Connell |
| Conoflow | Conrac | Conrad Electronic | Consolidated Control |
| Consolidated Ctrls | Consolidated Elect. | Consolidated Micro. | Conspec |
| Consumer Engineering | Contec | Contemporary | Contemporary Control |
| Continental | Continental Can | Continental Hydr. | Continental Instr. |
| Continental Machine | Continental Whitecap | Continuous Computing | Continuum Power |
| Contiweb | Contraves | Contrec | Contrex |
| Control | Control & Automation | Control And Metering | Control Applications |
| Control Chief | Control Concepts | Control Corporation | Control Craft |
| Control Data | Control Design | Control Devices | Control Electronics |
| Control Engineering | Control Enterprises | Control Instruments | Control Junctions |
| Control King | Control Laser | Control Logic | Control Microsystems |
| Control Power Sys. | Control Process | Control Service | Control Specialties |
| Control Systems | Control Techniques | Control Technology | Control Universal |
| Control Weigh | Control-O-Mation | Controlair Inc. | Controlled Power |
| Controller | Controlotron | Controls Ce Ag | Controls Electronic |
| Controls Group | Contronautics | Conver | Conversion Devices |
| Conversion Equipment | Conversion Equipment Corp | Convert | Convertec Power Electronics |
| Converter Concepts | Convertron | Convertronic | Conveyor Components |
| Cook | Cooper | Cooper Turbo | Cooperheat |
| Copar | Copes-Vulcan | Copley Controls | Copley Controls Corp |
| Copley Controls Corp. | Copralarm | Corcom | Core Technology |
| Coreco Inc. | Corley Mfg Co. | Corning | Corotec |
| Corrigan | Cortech | Cortech Systems | Cosel |
| Costruzioni | Cots | Cottrell | Cougar |
| Courtney Company | Coutant | Covag | Cox & Wright |
| Coyote | Cozzoli | Cps | Cps Computer Power Supply |
| Cra | Cra-Tek | Craftsman | Crane |
| Cranfield | Creative Control Sys | Creative Technology | Creonics |
| Cress | Criterion Instruments | Crittenden | Cromemco |
| Crompton Instruments | Crosfield Electronic | Cross | Crouse-Hinds |
| Crouzet | Crowcon Instruments | Crown | Crs |
| Crydom | Cryovac | Csa | Csi |
| Csi Keyboards | Csr Contraves | Ctc | Cti Electronics Corp |
| Cti-Cryogenics | Cts Of Canada | Ctx | Cubit |
| Cues Inc. | Cui | Cui Stack | Cummins Engine |
| Cupe | Curioni | Current Concepts | Current Logic Group |
| Curtis | Curtis Industries | Curtis Instruments | Curtis PMC |
| Curtiss Wright Corp | Cushman | Custom Controls | Custom Electronic Ab |
| Custom Power | Custom Power Systems | Custom Servo | Custom Servo Motors Inc. |
| Custom Technology | Custom-Bilt | Cutlass Fastener | Cutler Hammer |
| Cutler-Hammer | Cutters Electronics | Cvds | Cxr |
| Cybelec | Cybellec | Cyber Home | Cyber Research |
| Cyberchron | Cyberdyne | Cyberex | Cyberexact |
| Cybermation | Cybernetic | Cyberpak | Cybertech |
| Cybex | Cybex Trotter | Cybotech | Cycledynamics Inc. |
| Cyclomatic | Cyclonaire | Cyklop | Cyplex |
| Cypress Computer Sys | Cypress Solutions | Cyprium |
