Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872370 | Piston rod assembly including preloaded piston head and composite rod | John Matthews | 1989-10-10 |
| 4802404 | Composite cylinder assembly with removable liner assembly | William Dirkin, Fred H. Peters | 1989-02-07 |