Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6948392 | Inertia drive torque transmission level control and engine starter incorporating same | John M. Birkhimer | 2005-09-27 |
| 4769995 | Air-fuel ratio controller for a turbocharged internal combustion engine | J. Vincent Serve | 1988-09-13 |