Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834363 | Bicycle racing training apparatus | Bruce A. Sargeant, Mark J. Hoffenberg, Robert A. Walpert | 1989-05-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834363 | Bicycle racing training apparatus | Bruce A. Sargeant, Mark J. Hoffenberg, Robert A. Walpert | 1989-05-30 |