Granted Patent
Utility
US 4,407,063 · App. 06/311,002
Method and apparatus for fabricating battery plate envelopes
Inventor:
Peter E. Johnson
Patented Case
View Patent ↗
Granted: Oct 4, 1983
Filed: Oct 13, 1981
Inventor
Peter E. Johnson
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.