Granted Patent
Utility
US 6,203,940 · App. 09/262,975
Tubular air depolarized cell
Inventors:
John Edward Oltman, Robert B. Dopp, Gregory Scott Moy, Michael Andrew Ward
Patented Case
View Patent ↗
Granted: Mar 20, 2001
Filed: Mar 5, 1999
Inventors
John Edward Oltman
Robert B. Dopp
Gregory Scott Moy
Michael Andrew Ward
Assignee (at issue)
Rayovac 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.