Granted Patent
Utility
US 4,490,114 · App. 06/113,984
Ultrasonically driven low-speed rotary motor
Inventors:
Claus Kleesattel, George E. Warrin
Patented Case
View Patent ↗
Granted: Dec 25, 1984
Filed: Jan 21, 1980
Inventors
Claus Kleesattel
George E. Warrin
Assignee (at issue)
Cooper LaserSonics, 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.