Granted Patent
Utility
US 5,128,616 · App. 07/652,165
DC voltage tester having parallel connected resistive elements in thermal contact with a thermochronic material
Inventor:
Alan Palmer
Patented Case
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Granted: Jul 7, 1992
Filed: Feb 7, 1991
Inventor
Alan Palmer
Assignee (at issue)
Duracell Inc.
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.