Granted Patent
Utility
US 4,963,813 · App. 07/279,473
Control providing progressive charging in a dual voltage charging system
Inventor:
Donald Bolle
Patented Case
View Patent ↗
Granted: Oct 16, 1990
Filed: Dec 2, 1988
Inventor
Donald Bolle
Assignee (at issue)
C.E. Niehoff & Co.
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.