Granted Patent
Utility
US 4,303,887 · App. 06/089,087
Electrical liquid conductivity measuring system
Inventors:
Jeremy R. Hill, Allen Meyer
Patented Case
View Patent ↗
Granted: Dec 1, 1981
Filed: Oct 29, 1979
Inventors
Jeremy R. Hill
Allen Meyer
Assignee (at issue)
United States Surgical 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.