Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4363504 | High temperature lined conduits, elbows and tees | Edward F. Drewniany | 1982-12-14 |
| 4311166 | Valve assembly for use with high temperature and high pressure fluids | — | 1982-01-19 |