Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5131160 | Device for measuring woodruff keyways and method of using | Dietrich Wienss, John C. Fischer | 1992-07-21 |
| 4970799 | Device for measuring a shaft keyway and method of using | Dietrich Wienss, John C. Fischer | 1990-11-20 |