Granted Patent
Utility
US 4,388,380 · App. 06/321,350
Lithium cell having depletion gauge
Inventors:
Abel De Haan, Harshad Tataria
Patented Case
View Patent ↗
Granted: Jun 14, 1983
Filed: Nov 16, 1981
Inventors
Abel De Haan
Harshad Tataria
Assignee (at issue)
CORDIS 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.