Granted Patent
Utility
US 4,570,703 · App. 06/346,612
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Inventors:
Richard J. Ringsmuth, Jay Stephen Kaufman
Patented Case
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Granted: Feb 18, 1986
Filed: Feb 8, 1982
Inventors
Richard J. Ringsmuth
Jay Stephen Kaufman
Assignee (at issue)
United States Department of Energy
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.