Granted Patent
Utility
US 5,403,398 · App. 07/919,344
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Inventors:
Robert F. Riess, John Harisiadis, Kasimir G. Rudak, Fred Lieder, Elmer Nelson
Patented Case
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Granted: Apr 4, 1995
Filed: Jul 23, 1992
Inventors
Robert F. Riess
John Harisiadis
Kasimir G. Rudak
Fred Lieder
Elmer Nelson
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.