Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4701152 | Automatic transmission for multi-speed bicycle | Raymond D. Gilbert | 1987-10-20 |
| 4598920 | Automatic transmission for a bicycle and the like-pedaled apparatus | Raymond D. Gilbert | 1986-07-08 |