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Publication numberUSD313424 S
Publication typeGrant
Application numberUS 07/091,791
Publication dateJan 1, 1991
Filing dateSep 1, 1987
Publication number07091791, 091791, US D313424 S, US D313424S, US-S-D313424, USD313424 S, USD313424S
InventorsCharles H. High
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Piano training device
US D313424 S
Abstract  available in
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  1. The ornamental design for a piano training device, as shown and described.

FIG. 1 is a perspective view of a piano training device showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a front side elevational view thereof.

The undisclosed bottom portion of the piano training device is plane and unornamented.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US8852058 *Jul 14, 2011Oct 7, 2014Paul J. HamberisInteractive finger ladder
U.S. ClassificationD17/99, 84/470.00R