Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5609604 | Trocar with improved blade attachment | Richard F. Schwemberger, Darrel M. Powell, Randy R. Stephens | 1997-03-11 |
| 5591192 | Surgical penetration instrument including an imaging element | Richard F. Schwemberger, Ron Kolata | 1997-01-07 |