Granted Patent
Utility
US 4,248,124 · App. 05/969,722
Piano soundboard
Inventors:
George S. Klaiber, Stanley A. Grajek, Robert S. Hill
Patented Case
View Patent ↗
Granted: Feb 3, 1981
Filed: Dec 15, 1978
Inventors
George S. Klaiber
Stanley A. Grajek
Robert S. Hill
Assignee (at issue)
The Wurlitzer 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.