| Signal Transformer |
| Improved |
| Barber-Colman |
| Unknown |
| Garden City Plastics Equipment |
| Label-Aire Inc. |
| Battenfeld Fischer |
| Bekum |
| Heise |
| Yodogawa |
| Reliance Electric Company |
| Hartig |
| Cincinnati Fan and Ventilator Company, Inc. |
| Rocheleau |
| Impco |
| Siemens |
| Leffler |
| Magic |
| W. Mueller |
| W. Muller |
| Rock Valley Tool |
| CGI Motion |
| M.T. Motori Elettrici |
| Parker |
| Sterling |
| Corcom |
| Automatic Timing and Controls |
| STI |
| Air Logic Power Systems LLC |
| Uniloy |
| Lumonics |
| Lord Label Systems |
| Telemecanique |
| Diagraph |
| Fasson |
| Pneu Touch |
| Label Aire |
| Hunkar Laboratories |
| Rexroth |
| Morris Coupling Company |
