Granted Patent
Utility
US 6,738,445 · App. 09/449,827
Method and apparatus for changing the frequency content of an input signal and for changing perceptibility of a component of an input signal
Inventor:
Gilbert Arthur Joseph Soulodre
Patented Case
View Patent ↗
Granted: May 18, 2004
Filed: Nov 26, 1999
Inventor
Gilbert Arthur Joseph Soulodre
Assignees (at issue)
IVL Technologies Ltd.
Canada Inc.
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.