Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7533469 | Competition/leashless ice axe with adjustable grip | Joseph Skrivan, William R. Belcourt | 2009-05-19 |
| 6944955 | Competition/leashless ice axe with adjustable grip | Joseph Skrivan | 2005-09-20 |