Granted Patent
Utility
US 4,562,737 · App. 06/524,343
Ultrasonic testing
Inventor:
David H. Davies
Patented Case
View Patent ↗
Granted: Jan 7, 1986
Filed: Aug 18, 1983
Inventor
David H. Davies
Assignee (at issue)
British Steel 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.