Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4934658 | Locking mechanism for extendible telescoping tubular members | Marvin Berg | 1990-06-19 |
| 4577837 | Locking mechanism for extendible telescoping tubular members | Marvin Berg | 1986-03-25 |