Granted Patent
Utility
US 4,292,848 · App. 06/139,537
Walking-gate ultrasonic flaw detector
Inventors:
J. Montgomery Rainey, Francis M. Taylor
Patented Case
View Patent ↗
Granted: Oct 6, 1981
Filed: Apr 11, 1980
Inventors
J. Montgomery Rainey
Francis M. Taylor
Assignee (at issue)
Systems Research Laboratories, 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.