Granted Patent
Utility
US 4,448,799 · App. 06/487,145
Arc-initiating trigger apparatus and method for electric arc vapor deposition coating systems
Inventors:
Clark Bergman, Gary E. Vergason, Robert E. Clark, Shannon Bosak
Patented Case
View Patent ↗
Granted: May 15, 1984
Filed: Apr 21, 1983
Inventors
Clark Bergman
Gary E. Vergason
Robert E. Clark
Shannon Bosak
Assignee (at issue)
Multi-Arc Vacuum Systems, 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.