Granted Patent
Utility
US 4,543,304 · App. 06/591,015
Lithium cell having depletion gauge
Inventor:
Abel DeHaan
Patented Case
View Patent ↗
Granted: Sep 24, 1985
Filed: Mar 19, 1984
Inventor
Abel DeHaan
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.