Granted Patent
Utility
US 4,882,762 · App. 07/160,023
Multi-band programmable compression system
Inventor:
Fred Waldhauer
Patented Case
View Patent ↗
Granted: Nov 21, 1989
Filed: Feb 23, 1988
Inventor
Fred Waldhauer
Assignee (at issue)
ReSound 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.