Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5751124 | Safety guard for pedestrian-operated machines having rotatable blades | — | 1998-05-12 |
| 5703450 | Safety guard for pedestrian-operated machines having rotatable blades | — | 1997-12-30 |
| 5653568 | Safety guard for lift gates | — | 1997-08-05 |
| 5551866 | Safety system and fuel cap for inhibiting operation of an apparatus during refueling | Ronald W. Szczesny | 1996-09-03 |
| 5501297 | Safety guard assembly for fork lift trucks | — | 1996-03-26 |
| 5465807 | Safety guard for hand trucks or lift gates | — | 1995-11-14 |
| 5434457 | Foot pedal safety switch and safety circuit | Ronald W. Szcesny | 1995-07-18 |
| 5377571 | Safety guard system for band saws and similar equipment | — | 1995-01-03 |
| 5080578 | Liquid fuel burning heater having flame stopping means | Levon H. Keshishian | 1992-01-14 |