| | Grand Eagle Co's Inc (Richfield, OH) Electronic motors & transformers; hydro equipment | |
| | Gray Laboratories Inc (Norcross, GA) Design & manufacture custom electronic equipment | |
| | Harper-Wyman Co (Sugar Grove, IL) Automatic controls for gas & electric ranges, gas valves, combustion equipment & electronic controls | |
| | Holt Electronic Manufactures (Mahanoy City, PA) CATV equipment & electronic motor controls | |
| | HUG Electronics (Des Plaines, IL) Electronic equipment & parts retail & wholesale service | |
| | Infotek (Cuyahoga Falls, OH) Computer peripheral equipment: electronic document managing & optical imaging systems | |
| | Interphase Corp (Gilbertsville, PA) Electronic equipment | |
| | J-Star Industries Inc (Fort Atkinson, WI) Farm equipment: silo unloaders, cattle feeders, barn cleaners & equipment, electronic scales | |
| | KEMA-Powertest Inc (Chalfont, PA) Testing laboratory for electronic power equipment | |
| | Kes-Lab (Algonquin, IL) Automated test equipment & electronic controls | |
| | Kesner, C R Co (Geneva, IL) Electronic stimulation & therapeutic equipment | |
| | Kyrotech Inc (Northbrook, IL) Electronic timing equipment | |
| | Levin, Norman Associates Inc (Pompano Beach, FL) Subcontract manufacturing: electronic equipment | |
| | Lumedyne Inc (Port Richey, FL) Manufactures electronic photographic equipment | |
| | Mag-Geek Inc (Cary, IL) Electronic power equipment & magnetic engineering, designing, consulting services | |
