Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4398491 | Acoustic indicator of vacuum level in containers | James J. Fridl, Robert D. Payne, Wesley J. Szpitalak | 1983-08-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4398491 | Acoustic indicator of vacuum level in containers | James J. Fridl, Robert D. Payne, Wesley J. Szpitalak | 1983-08-16 |