Granted Patent
Utility
US 5,081,441 · App. 07/630,790
Hand-held tone generator for equalizing binaural hearing aids
Inventor:
Sunil Chojar
Patented Case
View Patent ↗
Granted: Jan 14, 1992
Filed: Oct 30, 1990
Inventor
Sunil Chojar
Assignee (at issue)
Starkey Laboratories, 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.