Granted Patent
Utility
US 5,557,536 · App. 08/347,282
Direct measurement ultrasonic velocity measuring system
Inventors:
Frederick A. Nabity, Larry Lee Fritz, Douglas T. Carson
Patented Case
View Patent ↗
Granted: Sep 17, 1996
Filed: Nov 30, 1994
Inventors
Frederick A. Nabity
Larry Lee Fritz
Douglas T. Carson
Assignee (at issue)
Isco, 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.