Granted Patent
Utility
US 5,400,409 · App. 08/208,747
Noise-reduction method for noise-affected voice channels
Inventor:
Klaus Linhard
Patented Case
View Patent ↗
Granted: Mar 21, 1995
Filed: Mar 11, 1994
Inventor
Klaus Linhard
Assignee (at issue)
Daimler-Benz AG
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.