Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4458555 | Composite connecting rod and process | Matthew W. Holtzberg | 1984-07-10 |
| 4432311 | Composite valve spring retainer and process | Matthew W. Holtzberg, Steven J. Henke, Lawrence D. Spaulding | 1984-02-21 |