Granted Patent
Utility
US 4,959,873 · App. 07/371,714
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Inventors:
Stephen J. Flynn, Gerard King
Patented Case
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Granted: Sep 25, 1990
Filed: Jun 27, 1989
Inventors
Stephen J. Flynn
Gerard King
Assignee (at issue)
The Marconi Company Limited
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.