Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5505466 | Cylinder head gasket with retaining ring and spring seal | Mark Shuster | 1996-04-09 |
| 5454574 | Composite powdered metal combustion seal ring | Mark Shuster | 1995-10-03 |
| 5338046 | Composite powdered metal retaining ring | Mark Shuster | 1994-08-16 |