Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4825502 | Device for visual inspection of fluid flow | William H. Armstrong, Gary A. Kasper, Dean R. Rohn | 1989-05-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4825502 | Device for visual inspection of fluid flow | William H. Armstrong, Gary A. Kasper, Dean R. Rohn | 1989-05-02 |