Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4954005 | Safety coupling device for robotic tooling | Harold E. Knasel | 1990-09-04 |
| 4786769 | Safety coupling device for robotic tooling | Harold E. Knasel | 1988-11-22 |
| 4639184 | Safety coupling device for robotic tooling | Harold E. Knasel | 1987-01-27 |