Granted Patent
Utility
US 4,307,158 · App. 06/164,404
Pressure relief apparatus for sealed containers such as galvanic cells
Inventor:
William C. Thibault
Patented Case
View Patent ↗
Granted: Dec 22, 1981
Filed: Jun 30, 1980
Inventor
William C. Thibault
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.