Granted Patent
Utility
US 4,515,583 · App. 06/542,435
Operative elliptical probe for ultrasonic surgical instrument and method of its use
Inventor:
Richard A. Sorich
Patented Case
View Patent ↗
Granted: May 7, 1985
Filed: Oct 17, 1983
Inventor
Richard A. Sorich
Assignee (at issue)
Coopervision, Inc
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.