Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4801317 | High efficiency particulate air filter and separators | by Gertrude B. F. Agnew, legal representative | 1989-01-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4801317 | High efficiency particulate air filter and separators | by Gertrude B. F. Agnew, legal representative | 1989-01-31 |