Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5681148 | Vacuum/holding tank | William J. Friedman, James A. Sigler | 1997-10-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5681148 | Vacuum/holding tank | William J. Friedman, James A. Sigler | 1997-10-28 |