Granted Patent
Utility
US 4,379,422 · App. 06/372,137
Polyphonic electronic music system
Inventors:
Walter Munch, Dale M. Uetrecht
Patented Case
View Patent ↗
Granted: Apr 12, 1983
Filed: Apr 27, 1982
Inventors
Walter Munch
Dale M. Uetrecht
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.