Granted Patent
Utility
US 5,488,668 · App. 08/156,425
Multiband programmable compression system
Inventor:
Fred Waldhauer
Patented Case
View Patent ↗
Granted: Jan 30, 1996
Filed: Nov 23, 1993
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.