Granted Patent
Utility
US 4,909,502 · App. 07/276,695
Passive jaw exerciser
Inventors:
Reinier Beeuwkes, Joseph B. Stella, Thomas E. Salisbury
Patented Case
View Patent ↗
Granted: Mar 20, 1990
Filed: Nov 28, 1988
Inventors
Reinier Beeuwkes
Joseph B. Stella
Thomas E. Salisbury
Assignee (at issue)
INNOVEX
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.