Granted Patent
Utility
US 5,588,742 · App. 08/267,970
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Inventors:
Gregory J. Subisak, Douglas S. Hammond
Patented Case
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Granted: Dec 31, 1996
Filed: Jun 29, 1994
Inventors
Gregory J. Subisak
Douglas S. Hammond
Assignee (at issue)
Holophone 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.