Granted Patent
Utility
US 5,363,429 · App. 07/887,005
Radio telephone device capable of identifying an interrupting caller and telephone system using the same
Inventor:
Akiko Fujisawa
Patented Case
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Granted: Nov 8, 1994
Filed: May 22, 1992
Inventor
Akiko Fujisawa
Assignee (at issue)
Kabushiki Kaisha Toshiba
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.