Granted Patent
Utility
US 5,258,243 · App. 07/998,079
Pressure relief valve for recombinant battery
Inventor:
Anthony G. Cannone
Patented Case
View Patent ↗
Granted: Nov 2, 1993
Filed: Dec 29, 1992
Inventor
Anthony G. Cannone
Assignee (at issue)
AT&T Bell Laboratories
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.