Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4570953 | Stair-climbing hand truck | Theodore Felzer, Frederick J. Rodgers | 1986-02-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4570953 | Stair-climbing hand truck | Theodore Felzer, Frederick J. Rodgers | 1986-02-18 |