Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5311661 | Method of pointing and corrugating heat exchange tubing | — | 1994-05-17 |
| 5251693 | Tube-in-shell heat exchanger with linearly corrugated tubing | — | 1993-10-12 |
| 4846148 | Heating apparatus and method | — | 1989-07-11 |
| 4768495 | Heating apparatus and method | — | 1988-09-06 |
| 4514997 | Tube corrugating die | — | 1985-05-07 |
| 4377083 | Tube corrugating apparatus and method | Dale H. Shepherd | 1983-03-22 |