Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867157 | Surgical cutting instrument | Erin McGurk-Burleson, Elmer Koehler, James A. Thimsen, Terry L. Whipple, Richard B. Caspari | 1989-09-19 |
| 4850354 | Surgical cutting instrument | Erin McGurk-Burleson, Elmer Koehler | 1989-07-25 |
| 4811734 | Surgical cutting instrument | Erin McGurk-Burleson, Elmer Koehler | 1989-03-14 |