Granted Patent
Utility
US 4,459,854 · App. 06/399,954
Ultrasonic transducer coupling member
Inventors:
Paul Richardson, Andrew L. Stevens
Patented Case
View Patent ↗
Granted: Jul 17, 1984
Filed: Jul 19, 1982
Inventors
Paul Richardson
Andrew L. Stevens
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.