Granted Patent
Utility
US 5,355,891 · App. 08/003,406
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Inventors:
Steven J. Wateridge, Shaun C. Byrne
Patented Case
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Granted: Oct 18, 1994
Filed: Jan 12, 1993
Inventors
Steven J. Wateridge
Shaun C. Byrne
Assignee (at issue)
Oxford Medical 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.