Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4688601 | Control valve | — | 1987-08-25 |
| 4453304 | Method of producing a corrugated, multi-ply metal bellows | Peter Janzen | 1984-06-12 |
| 4207453 | Method of producing seam welded tube | — | 1980-06-10 |