Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10315749 | Material for propeller occlusion of marine vessels | Howard W. Walker, Richard H. Griffey | 2019-06-11 |
| 5371987 | Acoustical door | James A. Hirsch | 1994-12-13 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10315749 | Material for propeller occlusion of marine vessels | Howard W. Walker, Richard H. Griffey | 2019-06-11 |
| 5371987 | Acoustical door | James A. Hirsch | 1994-12-13 |