Granted Patent
Utility
US 5,479,564 · App. 08/326,791
Method and apparatus for manipulating pitch and/or duration of a signal
Inventors:
Leonardus L. M. Vogten, Chang X. Ma, Werner D. E. Verhelst, Josephus H. Eggen
Patented Case
View Patent ↗
Granted: Dec 26, 1995
Filed: Oct 20, 1994
Inventors
Leonardus L. M. Vogten
Chang X. Ma
Werner D. E. Verhelst
Josephus H. Eggen
Assignee (at issue)
U.S. Philips 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.