Granted Patent
Utility
US 5,187,841 · App. 07/892,984
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Inventors:
Chiharu Takemura, Yoshiyuki Horita
Patented Case
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Granted: Feb 23, 1993
Filed: Jun 3, 1992
Inventors
Chiharu Takemura
Yoshiyuki Horita
Assignee (at issue)
Yoshida Kogyo K.K.
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.