Granted Patent
Utility
US 5,508,779 · App. 08/358,970
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Inventors:
Osamu Satou, Isamu Hirai, Masahiro Nakata
Patented Case
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Granted: Apr 16, 1996
Filed: Dec 19, 1994
Inventors
Osamu Satou
Isamu Hirai
Masahiro Nakata
Assignee (at issue)
Asahi Kogaku Kogyo Kabushiki Kaisha
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.