HZ

Heinrich Zeller

ZA Zf Friedrichshafen Ag: 2 patents #870 of 2,695Top 35%
Overall (All Time): #1,542,197 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
8439805 Hydraulic system of a gear box Rainer Grundler, Thilo Schmidt, Christian Popp 2013-05-14
7654931 Method for operating a drive train Christian Popp, Bernd Allgaier 2010-02-02
6073740 Process for tuning the switching state of a torque converter lock-up clutch in an automatic gear box Friedemann Jauch 2000-06-13