Ballman; Gray C.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ballman; Gray C..The latest application filed is for "electronic motor start switch".
- Ballman; Gray C. - Frontenac MO
- Ballman; Gray C. - St. Louis MO
- Ballman; Gray C. - St. Louis County MO
| Patent | Date |
|---|---|
| Electronic motor start switch Grant 4,399,394 - Ballman August 16, 1 | 1983-08-16 |
| Battery charger control device with D-C disconnect and A-C interrupt Grant 4,383,212 - Ballman May 10, 1 | 1983-05-10 |
| Battery charger control device Grant 4,198,593 - Ballman April 15, 1 | 1980-04-15 |
| Time Responsive Starting Switches Grant 3,819,994 - Ballman June 25, 1 | 1974-06-25 |
| Means And Methods For Ferro-resonant Float Charging Circuits Grant 3,781,630 - Ballman December 25, 1 | 1973-12-25 |
| Battery Charger Grant 3,733,535 - Ballman May 15, 1 | 1973-05-15 |
| Battery Charge Programmers Grant 3,652,916 - Ballman March 28, 1 | 1972-03-28 |
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