Granted Patent
Utility
US 5,945,613 · App. 09/104,261
Combination acoustic and electronic piano in which the acoustic action is disabled when played in the electronic mode
Inventor:
Thomas E. Kimble
Patented Case
View Patent ↗
Granted: Aug 31, 1999
Filed: Jun 24, 1998
Inventor
Thomas E. Kimble
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.