Granted Patent
Utility
US 5,567,902 · App. 08/369,882
Method and apparatus for optically sensing the position and velocity of piano keys
Inventors:
Thomas E. Kimble, David R. Wade
Patented Case
View Patent ↗
Granted: Oct 22, 1996
Filed: Jan 6, 1995
Inventors
Thomas E. Kimble
David R. Wade
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.