Granted Patent
Utility
US 4,295,377 · App. 06/057,057
Fastener incorporating removable ultrasonic transducer
Inventor:
James C. Couchman
Patented Case
View Patent ↗
Granted: Oct 20, 1981
Filed: Jul 12, 1979
Inventor
James C. Couchman
Assignee (at issue)
General Dynamics 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.