Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE38858 | Frictionally driven belted work machine | Charles E. Grawey, Cullen P. Hart | 2005-11-01 |
| 6536851 | Debris stripping apparatus | Bradley R. Jones, Sean C. McGinnis, Paul J. Mobley | 2003-03-25 |
| 6386654 | Protective cover for guide blocks | Stephen M. Singer, Sean C. McGinnis, Kristine R. Steiner | 2002-05-14 |
| RE37174 | Frictionally driven belted work vehicle | Charles E. Grawey, Cullen P. Hart | 2001-05-15 |
| 5707123 | Positive drive rubber belted track system | — | 1998-01-13 |
| 5363936 | Frictionally driven belted work vehicle | Charles R. Grawey, Cullen P. Hart | 1994-11-15 |
| 5279378 | Frictionally driven belted work vehicle | Charles E. Grawey, Cullen P. Hart | 1994-01-18 |
| D309314 | Endless belt for a belted vehicle | Charles E. Grawey, Cullen P. Hart | 1990-07-17 |
| D302017 | Endless belt for a track vehicle | Charles E. Grawey, Cullen P. Hart | 1989-07-04 |
| D298632 | Idler wheel for a track vehicle | Charles E. Grawey, Cullen P. Hart | 1988-11-22 |
| D298540 | Driver wheel for a track vehicle | Charles E. Grawey, Cullen P. Hart | 1988-11-15 |
| 4721498 | Endless elastomeric drive belt | — | 1988-01-26 |
| 4440209 | Split rim with axially located split band | — | 1984-04-03 |