Granted Patent
Utility
US 4,366,349 · App. 06/144,395
Generalized signal processing hearing aid
Inventor:
Roger A. Adelman
Patented Case
View Patent ↗
Granted: Dec 28, 1982
Filed: Apr 28, 1980
Inventor
Roger A. Adelman
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.