Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6306017 | Method and machining tool for producing helically profiled workpieces | — | 2001-10-23 |
| 6059440 | Twin-screw extruder | — | 2000-05-09 |
| 5150518 | Process for manufacturing inner and outer parts for a rotary piston machinein which the inner and outer parts have parallel axes | — | 1992-09-29 |
| 4604011 | Method and apparatus for edge-planing sheet metal | Helmut Rungger, Johann Knoll | 1986-08-05 |