Granted Patent
Utility
US 4,264,787 · App. 06/108,921
Hazardous voltage protection circuit
Inventors:
Gerald J. Yachabach, Gary L. Eisenhauer
Patented Case
View Patent ↗
Granted: Apr 28, 1981
Filed: Dec 31, 1979
Inventors
Gerald J. Yachabach
Gary L. Eisenhauer
Assignee (at issue)
Akzona Incorporated
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.