Granted Patent
Utility
US 4,870,970 · App. 07/190,689
Ultrasonic investigation apparatus
Inventors:
Nigel Gray, Simon Knibbs, Patrick Finlay, Robert Crocker
Patented Case
View Patent ↗
Granted: Oct 3, 1989
Filed: May 6, 1988
Inventors
Nigel Gray
Simon Knibbs
Patrick Finlay
Robert Crocker
Assignee (at issue)
Fulmer Company, LLC
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.