Granted Patent
Utility
US 4,904,827 · App. 07/303,811
Electric cord-protecting shipping plug
Inventors:
Elisha L. Potter, Harold J. Coleman
Patented Case
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Granted: Feb 27, 1990
Filed: Jan 30, 1989
Inventors
Elisha L. Potter
Harold J. Coleman
Assignees (at issue)
Harold Joseph Coleman
Elisha Lindsay Potter
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.