Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D292935 | Gate valve | — | 1987-11-24 |
| D292933 | Gate valve | — | 1987-11-24 |
| D292820 | Gate valve | — | 1987-11-17 |
| D291723 | Gate valve | — | 1987-09-01 |
| D291724 | Gate valve | — | 1987-09-01 |
| 4588164 | Through conduit gate valve | — | 1986-05-13 |
| 4530488 | Through conduit gate valve with double expanding gate assembly | — | 1985-07-23 |
| 4410373 | Process for heat treatment of a metal workpiece | — | 1983-10-18 |
| 4379725 | Process for hot isostatic pressing of a metal workpiece | — | 1983-04-12 |
| 4318437 | Metal casting system | — | 1982-03-09 |
| 4249889 | Method and apparatus for preheating, positioning and holding objects | — | 1981-02-10 |
| 4222429 | Foundry process including heat treating of produced castings in formation sand | — | 1980-09-16 |
| 4193577 | Expanding gate valve with axially flexed spring plate | — | 1980-03-18 |