Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4540487 | Filter apparatus | John K. Johnson, Jack R. Earhart, Gordon L. Astrom | 1985-09-10 |
| 4454034 | Filter apparatus | Gordon L. Astrom | 1984-06-12 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4540487 | Filter apparatus | John K. Johnson, Jack R. Earhart, Gordon L. Astrom | 1985-09-10 |
| 4454034 | Filter apparatus | Gordon L. Astrom | 1984-06-12 |