Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5363936 | Frictionally driven belted work vehicle | Charles R. Grawey, Robert J. Grob | 1994-11-15 |
| 5279378 | Frictionally driven belted work vehicle | Charles E. Grawey, Robert J. Grob | 1994-01-18 |