Granted Patent
Utility
US 4,694,237 · App. 06/883,062
Isolated power supply system and method
Inventor:
George E. Hanson
Patented Case
View Patent ↗
Granted: Sep 15, 1987
Filed: Jul 8, 1986
Inventor
George E. Hanson
Assignee (at issue)
Norand Corporation
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.