Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9790720 | Torque element retention system | George Larson | 2017-10-17 |
| 8959717 | Circumferential strain rotary detent | Philip A. Billings, George Larson | 2015-02-24 |
| 5672041 | Collapsible, powered platform for lifting wheelchair | Lynn O. Ringdahl, Jeffrey J. Stoen, James B. Welte, Gary G. Gruber | 1997-09-30 |