Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5148631 | Pneumatic door operator having pneumatic actuator and lock | Anthony J. Walsh, Roger J. Weseloh | 1992-09-22 |
| 4901474 | Pneumatic door operator having novel pneumatic actuator and lock | Anthony J. Walsh | 1990-02-20 |