Granted Patent
Utility
US 4,833,046 · App. 07/125,624
Metal-hydrogen secondary battery
Inventor:
Prodyot Roy
Patented Case
View Patent ↗
Granted: May 23, 1989
Filed: Nov 25, 1987
Inventor
Prodyot Roy
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.