Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887644 | Tee fitting integrally formed in valve body | Jeffrey T. Jeromson | 1989-12-19 |
| 4877053 | Pinch valve | Edward M. Yusko, Jr., Cal R. Brown, Terry M. Kalain | 1989-10-31 |
| 4800920 | Pinch valve | Edward M. Yusko, Jr., Cal R. Brown, Terry M. Kalain | 1989-01-31 |