Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE33075 | Method and apparatus for detecting leaks | Albert E. Holm | 1989-10-03 |
| 4686851 | Method and apparatus for detecting leaks | Albert E. Holm | 1987-08-18 |
| 4625545 | Method and apparatus for detecting leaks | Albert E. Holm | 1986-12-02 |
| 4430891 | Method and apparatus for measuring volume | Albert E. Holm | 1984-02-14 |