Granted Patent
Utility
US 4,535,759 · App. 06/431,197
Ultrasonic medical instrument
Inventors:
Todd Polk, James F. Morrin
Patented Case
View Patent ↗
Granted: Aug 20, 1985
Filed: Sep 30, 1982
Inventors
Todd Polk
James F. Morrin
Assignee (at issue)
Cabot Medical 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.