Granted Patent
Utility
US 4,897,786 · App. 07/093,501
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Inventors:
David W. Pimm, Paul J. Natusch, Robert T. Silver
Patented Case
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Granted: Jan 30, 1990
Filed: Sep 4, 1987
Inventors
David W. Pimm
Paul J. Natusch
Robert T. Silver
Assignee (at issue)
Digital Equipment 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.