Granted Patent
Utility
US 5,161,644 · App. 07/870,072
Lubrication system for tandem axle assembly
Inventors:
Kevin Michael Swenskowski, Richard K. Szymanski
Patented Case
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Granted: Nov 10, 1992
Filed: Apr 17, 1992
Inventors
Kevin Michael Swenskowski
Richard K. Szymanski
Assignee (at issue)
A. E. Chrow
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.