Granted Patent
Utility
US 4,372,168 · App. 06/271,396
Flowmeter
Inventor:
Christopher A. Watson
Patented Case
View Patent ↗
Granted: Feb 8, 1983
Filed: Jun 8, 1981
Inventor
Christopher A. Watson
Assignee (at issue)
International Telephone and Telegraph 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.