Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5592935 | Positive/negative air pressure adaptor for use with respirators | Gerald V. Elstran, Robert J. Mattila | 1997-01-14 |
JP
Jerome D. Phillips
Overall (1997): #132,073 of 185,788Top 75%
1
Patents 1997