Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4567790 | Motion transmitting system | Roger P. Butterfield | 1986-02-04 |
| 4471672 | Motion transmitting system | Roger P. Butterfield | 1984-09-18 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4567790 | Motion transmitting system | Roger P. Butterfield | 1986-02-04 |
| 4471672 | Motion transmitting system | Roger P. Butterfield | 1984-09-18 |