Granted Patent
Utility
US 4,355,262 · App. 06/154,394
Electric arc apparatus
Inventors:
Anthony K. Chan, John C. Hilliard, Alan Jones, Felix J. Weinberg
Patented Case
View Patent ↗
Granted: Oct 19, 1982
Filed: Aug 13, 1979
Inventors
Anthony K. Chan
John C. Hilliard
Alan Jones
Felix J. Weinberg
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.