Granted Patent
Utility
US 5,467,321 · App. 08/312,299
Insertion ultrasonic transducer with mode conversion and method for reducing multiple signal reception
Inventor:
Joseph Baumoel
Patented Case
View Patent ↗
Granted: Nov 14, 1995
Filed: Sep 26, 1994
Inventor
Joseph Baumoel
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.