Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847501 | Occupancy detector | Robert Westwood | 1989-07-11 |
| 4835825 | Machine for manufacturing a roof vent having a lead base | — | 1989-06-06 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847501 | Occupancy detector | Robert Westwood | 1989-07-11 |
| 4835825 | Machine for manufacturing a roof vent having a lead base | — | 1989-06-06 |