Granted Patent
Utility
US 5,301,259 · App. 08/034,526
Method and apparatus for generating vocal harmonies
Inventors:
Brian C. Gibson, John P. Bertsch
Patented Case
View Patent ↗
Granted: Apr 5, 1994
Filed: Mar 22, 1993
Inventors
Brian C. Gibson
John P. Bertsch
Assignee (at issue)
IVL Technologies Ltd.
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.