Granted Patent
Utility
US 5,320,532 · App. 07/871,910
Method of using ultrasonic dental tool
Inventors:
Farrokh Farzin-Nia, Rohit Sachdeva, Howard Alliger
Patented Case
View Patent ↗
Granted: Jun 14, 1994
Filed: Apr 21, 1992
Inventors
Farrokh Farzin-Nia
Rohit Sachdeva
Howard Alliger
Assignee (at issue)
Ormco 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.