Granted Patent
Utility
US 4,251,602 · App. 06/130,263
High pressure safety vent for galvanic dry cells
Inventor:
Theodore R. Beatty
Patented Case
View Patent ↗
Granted: Feb 17, 1981
Filed: Mar 14, 1980
Inventor
Theodore R. Beatty
Assignee (at issue)
Union Carbide 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.