The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 03, 1981
Filed:
Dec. 15, 1978
Applicant:
Inventors:
George S Klaiber, Tonawanda, NY (US);
Stanley A Grajek, DeKalb, IL (US);
Robert S Hill, Holly Springs, MS (US);
Assignee:
The Wurlitzer Company, DeKalb, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
G10C / ;
U.S. Cl.
CPC ...
84192 ; 84195 ; 84212 ;
Abstract
A soundboard for pianos is provided which is of laminated construction, comprising three plies. The top and bottom plies are of equal thickness and lie in planes parallel to one another. The grains of these plies are also parallel to one another. The center ply is of greater thickness than the sum of the outer plies, but of less thickness than twice the sum of the two outer plies. The grain of the center or core ply is at right angles to the grains of the two outer plies.