Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5259108 | Method of assembling rotary puffer switch | John S. Schaffer | 1993-11-09 |
| 5226528 | Switch operating mechanism | John S. Schaffer, Richard F. Holzhausser | 1993-07-13 |
| 5153399 | Rotary puffer switch | John S. Schaffer | 1992-10-06 |