Granted Patent
Utility
US 4,732,045 · App. 07/015,984
Method for rapid acoustic emission testing of pressure vessels
Inventor:
Philip R. Blackburn
Patented Case
View Patent ↗
Granted: Mar 22, 1988
Filed: Feb 18, 1987
Inventor
Philip R. Blackburn
Assignee (at issue)
Union Carbide 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.