Patents per Year
Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 7322329 | Assembly process for hydraulic valve lifters to reduce variation in valve lift | Nick J. Hendriksma | 2008-01-29 | |
| 6976463 | Anti-rotation deactivation valve lifter | Mark J. Spath, Nick J. Hendriksma, William D. Bauman | 2005-12-20 | |
| 6677698 | Spark plug copper core alloy | William LaBarge, Conrad Anderson, John Giacchina, David Allen Smith | 2004-01-13 | $7,285,000 |
| 4764070 | Capped wheel nut assembly | William L. Baltzell | 1988-08-16 | |
| D274496 | Hammer | Donald D. Grover, Frank Mikic | 1984-07-03 |