Granted Patent
Utility
US 5,139,833 · App. 07/467,384
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Inventor:
Karl G. Ohaus
Patented Case
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Granted: Aug 18, 1992
Filed: Jan 19, 1990
Inventor
Karl G. Ohaus
Assignee (at issue)
American Standard Inc.
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.