Granted Patent
Utility
US 5,900,599 · App. 08/879,809
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Inventors:
Shigeo Ohashi, Nobuo Misaki, Tatsuya Minagawa, Toyonaru Tanaka
Patented Case
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Granted: May 4, 1999
Filed: Jun 20, 1997
Inventors
Shigeo Ohashi
Nobuo Misaki
Tatsuya Minagawa
Toyonaru Tanaka
Assignee (at issue)
Nihon Kaiheiki Industrial Company, Ltd.
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.