Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8245374 | Roller burnishing machine for crankshafts | Roland Heffe, Alfred Heimann, Theo Nijssen | 2012-08-21 |
| 7779660 | Procedure for deep rolling crankshafts | Ralf Freitag, Roland Heffe, Alfred Heimann, Theo Nijssen, Juergen Winnertz | 2010-08-24 |
| 7493788 | Deep rolling roller head for split-pin crankshafts | Roland Heffe, Hans-Willi Lingen, Hans Zimmermann | 2009-02-24 |
| 6389861 | Roller cage | Siegfried Bagusche, Herbert Kalb, Hans Zimmerman | 2002-05-21 |