Granted Patent
Utility
US 4,602,548 · App. 06/747,656
Tone compensator for piano soundboards
Inventor:
Harold A. Conklin, Jr.
Patented Case
View Patent ↗
Granted: Jul 29, 1986
Filed: Jun 21, 1985
Inventor
Harold A. Conklin, 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.