Granted Patent
Utility
US 4,375,764 · App. 06/262,500
Liquid level system
Inventors:
Victor N. Lawford, Robert Austin
Patented Case
View Patent ↗
Granted: Mar 8, 1983
Filed: May 11, 1981
Inventors
Victor N. Lawford
Robert Austin
Assignee (at issue)
ITT 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.