Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6272755 | Extendable tool lock | Mark Schaefer, Brian W. Hubbard | 2001-08-14 |
| 5933965 | Extendable tool | Erkki O. Linden, Angelo M. Marasco, Mark Schaefer, Brian W. Hubbard | 1999-08-10 |