Granted Patent
Utility
US 4,494,305 · App. 06/444,644
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Inventor:
Sohrab Safai
Patented Case
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Granted: Jan 22, 1985
Filed: Nov 26, 1982
Inventor
Sohrab Safai
Assignee (at issue)
International Telephone and Telegraph Corporation
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.