Granted Patent
Utility
US 4,159,457 · App. 05/845,060
Low voltage high current transformer
Inventor:
Douglass E. Charpentier
Patented Case
View Patent ↗
Granted: Jun 26, 1979
Filed: Oct 25, 1977
Inventor
Douglass E. Charpentier
Assignee (at issue)
Burroughs, 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.