Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837891 | Track and trolley with dual drive wheels having annular track engaging surfaces of different diameters | John W. Toma | 1989-06-13 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837891 | Track and trolley with dual drive wheels having annular track engaging surfaces of different diameters | John W. Toma | 1989-06-13 |