Granted Patent
Utility
US 4,403,757 · App. 06/245,734
Modulating fluid shear coupling
Inventor:
Michael Shepherd
Patented Case
View Patent ↗
Granted: Sep 13, 1983
Filed: Mar 20, 1981
Inventor
Michael Shepherd
Assignee (at issue)
Wallace Murray Corporation
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.