Granted Patent
Utility
US 4,879,907 · App. 07/014,577
Soap film flowmeter
Inventors:
Dwight J. Patterson, Neil A. Levine
Patented Case
View Patent ↗
Granted: Nov 14, 1989
Filed: Feb 13, 1987
Inventors
Dwight J. Patterson
Neil A. Levine
Assignee (at issue)
Humonics, Inc.
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.