Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4971639 | Method and apparatus for joining polymeric substrates such as vinyl frames | Robert Quinn | 1990-11-20 |
| 4909892 | Apparatus for welding thermoplastic frame members | Robert Quinn, Louis Sparacino, Paul Barbero | 1990-03-20 |
| 4828239 | Frame piece joining apparatus and jig therefor | Paul Barbero, Robert Quinn, Louis Sparacino | 1989-05-09 |