Granted Patent
Utility
US 6,257,402 · App. 09/544,587
Package having vapor pressure control for batteries
Inventor:
Jonathan W. Hedman
Patented Case
View Patent ↗
Granted: Jul 10, 2001
Filed: Apr 6, 2000
Inventor
Jonathan W. Hedman
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.