Granted Patent
Utility
US 5,044,480 · App. 07/537,368
Fluid friction coupling
Inventor:
Herbert Taureg
Patented Case
View Patent ↗
Granted: Sep 3, 1991
Filed: Jun 13, 1990
Inventor
Herbert Taureg
Assignee (at issue)
Viscodrive 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.