Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8973925 | Folding convertible wheelchair | — | 2015-03-10 |
| 8678402 | Portable convertible wheelchair | — | 2014-03-25 |
| 4756127 | Universal framing system for glazing and method of using same | Patrick J. Holthaus | 1988-07-12 |