Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4364542 | Packing gland assembly | — | 1982-12-21 |
| 4341369 | Expanding gate valve assembly | — | 1982-07-27 |
| 4320890 | Valve seat structure | William S. Shelton | 1982-03-23 |
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4364542 | Packing gland assembly | — | 1982-12-21 |
| 4341369 | Expanding gate valve assembly | — | 1982-07-27 |
| 4320890 | Valve seat structure | William S. Shelton | 1982-03-23 |