Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4420676 | Welding apparatus | Peter Hirsch, Iwar Thomson | 1983-12-13 |
| 4303822 | Apparatus for welding steel sheets | Peter Hirsch, Rolf Schafer | 1981-12-01 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4420676 | Welding apparatus | Peter Hirsch, Iwar Thomson | 1983-12-13 |
| 4303822 | Apparatus for welding steel sheets | Peter Hirsch, Rolf Schafer | 1981-12-01 |