Granted Patent
Utility
US 4,389,914 · App. 06/275,082
Chord identification system for electronic musical instruments
Inventors:
Dale M. Uetrecht, Carlton J. Simmons, Jr.
Patented Case
View Patent ↗
Granted: Jun 28, 1983
Filed: Jun 18, 1981
Inventors
Dale M. Uetrecht
Carlton J. Simmons, Jr.
Assignee (at issue)
Baldwin Piano & Organ Company
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.