Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4360958 | Method of making heat exchangers | — | 1982-11-30 |
| 4349949 | Method of making heat exchangers | — | 1982-09-21 |
| 4337826 | Heat exchangers and method of making same | — | 1982-07-06 |
| 4332069 | Making heat exchangers | — | 1982-06-01 |
| 4330913 | Method of making heat exchangers | — | 1982-05-25 |
| 4226233 | Respirators | — | 1980-10-07 |