Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4431022 | Line removable valve structure with extensible seal rings on valve cartridge | — | 1984-02-14 |
| 4387735 | Line removable valve structure with extensible seal rings on pipeline support structure | — | 1983-06-14 |
| 4345738 | Fire safe seal | — | 1982-08-24 |
| 4337919 | Bearing retainers for a rotary valve | — | 1982-07-06 |
| 4281680 | Swing check valve construction | — | 1981-08-04 |
| 4260134 | Skirted hub with full penetration butt weld to body | — | 1981-04-07 |