Granted Patent
Utility
US 4,754,186 · App. 06/945,508
Drive network for an ultrasonic probe
Inventors:
Alfredo Choperena, Chhaya K. Kohli
Patented Case
View Patent ↗
Granted: Jun 28, 1988
Filed: Dec 23, 1986
Inventors
Alfredo Choperena
Chhaya K. Kohli
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
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.