Granted Patent
Utility
US 4,713,554 · App. 06/851,227
Extended range regulated power supply
Inventor:
Ross Henderson
Patented Case
View Patent ↗
Granted: Dec 15, 1987
Filed: Apr 14, 1986
Inventor
Ross Henderson
Assignee (at issue)
Powercube 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.