Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5182512 | Method and apparatus for determining relative contributions of individual cylinders of internal combustion engine using contact tachometer | Robert D. Braun, Matthew M. Crass, James R. Piehl, Gary S. Wollert, Jerry W. Mueckl +1 more | 1993-01-26 |