Granted Patent
Utility
US 6,273,231 · App. 09/415,724
Fluid operated clutch disengaging apparatus
Inventors:
Hartmut Koschmieder, Walter Parzefall, Ludwig Winkelmann, Harald Peschke
Patented Case
View Patent ↗
Granted: Aug 14, 2001
Filed: Oct 12, 1999
Inventors
Hartmut Koschmieder
Walter Parzefall
Ludwig Winkelmann
Harald Peschke
Assignee (at issue)
LUK Lamellen Und Kupplungsbau
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.