Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8408360 | Automatic belay warning system | — | 2013-04-02 |
| 7572207 | Climbing wall structure and method of construction | — | 2009-08-11 |
| 7524269 | Wall-climbing accessory | Kevin E. Cieszkowski | 2009-04-28 |
| 4773920 | Coated abrasive suitable for use as a lapping material | Jonathan N. Chasman, Ramon F. Hegel, Philip E. Kendall, Douglas S. Spencer | 1988-09-27 |