Granted Patent
Utility
US 4,154,667 · App. 05/866,557
Method of converting box anodes to expandable anodes
Inventors:
Gerald R. Pohto, Richard O. Olson
Patented Case
View Patent ↗
Granted: May 15, 1979
Filed: Jan 3, 1978
Inventors
Gerald R. Pohto
Richard O. Olson
Assignee (at issue)
Diamond Shamrock 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.