Granted Patent
Utility
US 6,820,053 · App. 09/680,981
Method and apparatus for suppressing audible noise in speech transmission
Inventor:
Dietmar Ruwisch
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: Oct 6, 2000
Inventor
Dietmar Ruwisch
Assignee (at issue)
Dietmar RUWISCH
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.