Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6170731 | Method and apparatus for friction torque welding | Mark W. Hofius | 2001-01-09 |
| 6041164 | Expansion and mounting apparatus for infrared radiant energy source | Mark W. Hofius | 2000-03-21 |
| 5772103 | Method and apparatus for friction torque welding | Mark W. Hofius | 1998-06-30 |
| 5444814 | Method of infrared welding on thermoplastic parts utilizing contoured energy reflecting shields | — | 1995-08-22 |
| 5423938 | Hot air cold form staking device | Mark W. Hofius | 1995-06-13 |
| 4870706 | Sports protection garment | Kenneth E. Ketcham, John P. Barry | 1989-10-03 |