Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4909056 | Method and an apparatus for cold-roll forming of annular workpieces | — | 1990-03-20 |
| 4557135 | Device for manipulating workpieces | Theo Frei | 1985-12-10 |
| 4352281 | Method and apparatus for bending pipes | — | 1982-10-05 |
| 4255860 | Calibrating apparatus for inside and outside surfaces and alignment of pipe sections | — | 1981-03-17 |
| 4235139 | Automatic shearing apparatus | Eduard A. Haenni | 1980-11-25 |