Granted Patent
Utility
US 4,931,368 · App. 07/102,814
Vent liner and cover construction for galvanic cells
Inventors:
Alan D. Ayers, John A. Wesner
Patented Case
View Patent ↗
Granted: Jun 5, 1990
Filed: Sep 22, 1987
Inventors
Alan D. Ayers
John A. Wesner
Assignee (at issue)
Eveready Battery Company, Inc.
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.