Granted Patent
Utility
US 5,547,430 · App. 08/213,187
Drive assembly for a four wheel drive vehicle having a first and second viscous coupling
Inventor:
Christian Gasch
Patented Case
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Granted: Aug 20, 1996
Filed: Mar 15, 1994
Inventor
Christian Gasch
Assignee (at issue)
GKN Vicsodrive GmbH
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.