Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6145818 | Heat exchanger | — | 2000-11-14 |
| 4941528 | Ceiling made of metal panels | — | 1990-07-17 |
| 4931018 | Device for training welders | Richard Fay, David L. Frericks, Bruce A. Blair | 1990-06-05 |
| 4923733 | Flexible form sheet | — | 1990-05-08 |
| 4811543 | Process for installing plastic pipes in a plaster floor layer | — | 1989-03-14 |
| 4753286 | Heat exchanger having an exchanger element arranged in a casing | — | 1988-06-28 |