Granted Patent
Utility
US 6,502,682 · App. 09/906,279
Hydraulic release system
Inventors:
Hartmut Koschmieder, Walter Parzefall, Ludwig Winkelmann, Harald Peschke
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Jul 16, 2001
Inventors
Hartmut Koschmieder
Walter Parzefall
Ludwig Winkelmann
Harald Peschke
Assignee (at issue)
LuK Lamellen und Kupplungsbau Beteiligungs KG
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.