Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850214 | Method of fabricating a projection for resistance welding | Paul Opprecht | 1989-07-25 |
| 4712960 | Openable can body | Paul Opprecht, Werner Urech | 1987-12-15 |
| 4637521 | Openable can body | Paul Opprecht, Werner Urech | 1987-01-20 |
| 4495397 | Projection for resistance welding of soft metals | Paul Opprecht | 1985-01-22 |