Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869479 | Spring for floors and the like | Richard C. Colonel, Frederick A. Sutton | 1989-09-26 |
| 4798009 | Spring apparatus for shoe soles and the like | Richard C. Colonel | 1989-01-17 |