Granted Patent
Utility
US 4,237,409 · App. 05/902,671
Multiple-battery battery charger
Inventor:
Raymond K. Sugalski
Patented Case
View Patent ↗
Granted: Dec 2, 1980
Filed: May 4, 1978
Inventor
Raymond K. Sugalski
Assignee (at issue)
General Electric Company
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.