Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699041 | Pneumatic pressure sensor device | — | 1997-12-16 |
| 5635691 | Pneumatic pressure sensor switch device for a vehicle tire | — | 1997-06-03 |
| 5119066 | Pressure sensor system | — | 1992-06-02 |
| 5055826 | Pressure sensor system | — | 1991-10-08 |
| 4993470 | Latch for powered door assembly | John C. Martin, Paul H. Martin | 1991-02-19 |
| 4975679 | Pressure sensor system | — | 1990-12-04 |
| 4949772 | Roll-up doors | John C. Martin, Paul H. Martin | 1990-08-21 |
| 4940380 | Load elevator platform for truck or the like | John C. Martin, Paul H. Martin | 1990-07-10 |
| 4939433 | Control system for roll-up doors | John C. Martin, Paul H. Martin | 1990-07-03 |
| 4890090 | Pressure alarm system for motor vehicle tires | — | 1989-12-26 |
| 4860813 | Doors for vans | Paul H. Martin, John C. Martin | 1989-08-29 |