Granted Patent
Utility
US 5,197,946 · App. 07/727,777
Injection instrument with ultrasonic oscillating element
Inventor:
Shunro Tachibana
Patented Case
View Patent ↗
Granted: Mar 30, 1993
Filed: Jul 10, 1991
Inventor
Shunro Tachibana
Assignees (at issue)
Shunro Tachibana
SUMITOMO ELECTRIC INDUSTRIES, LTD.
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.