Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6746018 | Shaft seal | Michael L. Lewis, Christopher A. Carrigan, Steven H. Griggs | 2004-06-08 |
| 6663313 | Mounting system for speed reducers | Michael L. Lewis, Christopher A. Carrigan, Steven H. Griggs | 2003-12-16 |
| 4890504 | Helical gearsets | Harold R. Johnson, III, Allyn E. Phillips | 1990-01-02 |
| 4794811 | Helical gearsets | Harold R. Johnson, III, Allyn E. Phillips | 1989-01-03 |
| 4697675 | Shaft aligned backstop for a reducer | Harold R. Johnson, III, Allyn E. Phillips, Richard A. Virgo, James E. Mickelson | 1987-10-06 |
| 4212502 | Bearing take-up frame | Ernest R. Ames, Hilarius S. Struttmann | 1980-07-15 |