Granted Patent
Utility
US 4,544,613 · App. 06/669,605
Electrochemical cell having continuous depletion gauge
Inventor:
Abel DeHaan
Patented Case
View Patent ↗
Granted: Oct 1, 1985
Filed: Nov 8, 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.