Granted Patent
Utility
US 4,452,728 · App. 06/467,974
Voltage stable nonlinear resistor containing minor amounts of aluminum, boron and selected alkali metal additives
Inventors:
William G. Carlson, Tapan K. Gupta, Andrew S. Sweetana, Jr.
Patented Case
View Patent ↗
Granted: Jun 5, 1984
Filed: Feb 18, 1983
Inventors
William G. Carlson
Tapan K. Gupta
Andrew S. Sweetana, Jr.
Assignee (at issue)
Westinghouse Electric Company LLC
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.