Granted Patent
Utility
US 6,722,990 · App. 10/225,209
Pressure regulator assembly for use with a slip joint in a driveshaft assembly
Inventor:
James A. Duggan
Patented Case
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Granted: Apr 20, 2004
Filed: Aug 21, 2002
Inventor
James A. Duggan
Assignee (at issue)
Torque-Traction Technologies LLC
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.