Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D304963 | Bicycle exercise stand | Bruce A. Sargeant, Robert Reasons, Mark J. Hoffenberg, James Lindsay | 1989-12-05 |
| 4834363 | Bicycle racing training apparatus | Bruce A. Sargeant, Mark J. Hoffenberg, Rob Reasons | 1989-05-30 |
| 4815730 | Bicycle support and load mechanism | Mark J. Hoffenberg | 1989-03-28 |