Granted Patent
Utility
US 4,343,871 · App. 06/213,042
Light weight battery
Inventors:
Shinichi Tobishima, Junichi Yamaki, Akihiko Yamaji
Patented Case
View Patent ↗
Granted: Aug 10, 1982
Filed: Dec 4, 1980
Inventors
Shinichi Tobishima
Junichi Yamaki
Akihiko Yamaji
Assignee (at issue)
Nippon Telegraph and Telephone Public 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.