Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4326811 | Sealess pressurized mixing vessels | — | 1982-04-27 |
| 4322056 | Positive closure disc valve | Ronald R. Chapman | 1982-03-30 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4326811 | Sealess pressurized mixing vessels | — | 1982-04-27 |
| 4322056 | Positive closure disc valve | Ronald R. Chapman | 1982-03-30 |