Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4227391 | Process for making tube in sheet heat exchangers | — | 1980-10-14 |
| 4224817 | Apparatus and process for making tube in sheet heat exchangers | Charles A. Kleine | 1980-09-30 |