Granted Patent
Utility
US 4,390,760 · App. 06/340,352
Conductivity type in-line liquid sensing apparatus
Inventor:
Stephen W. Schwitters
Patented Case
View Patent ↗
Granted: Jun 28, 1983
Filed: Jan 18, 1982
Inventor
Stephen W. Schwitters
Assignee (at issue)
Taylor Freezer Company
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.