Granted Patent
Utility
US 4,741,731 · App. 06/830,752
Vented ultrasonic transducer for surgical handpiece
Inventors:
Brent Starck, Joseph F. Brumbach, Robert F. Zapka
Patented Case
View Patent ↗
Granted: May 3, 1988
Filed: Feb 19, 1986
Inventors
Brent Starck
Joseph F. Brumbach
Robert F. Zapka
Assignee (at issue)
FibraSonics 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.