Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4909892 | Apparatus for welding thermoplastic frame members | Robert Quinn, John Grandy, Paul Barbero | 1990-03-20 |
| 4828239 | Frame piece joining apparatus and jig therefor | John Grandy, Paul Barbero, Robert Quinn | 1989-05-09 |