Granted Patent
Utility
US 5,093,970 · App. 07/516,591
Lead-acid battery plate and its manufacturing method
Inventors:
Keiji Senoo, Takamasa Yoshida, Hideharu Ishida, Masao Takura
Patented Case
View Patent ↗
Granted: Mar 10, 1992
Filed: Apr 30, 1990
Inventors
Keiji Senoo
Takamasa Yoshida
Hideharu Ishida
Masao Takura
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.