| US 7,253,349 B1 | ||
| Engineers piano with bisymmetrical manuals and accompanying musical notation system | ||
| Joseph Clay Saltsman, 1671 Vt Rt 111, Derby, Vt. 05829 (US) | ||
| Filed on Jun. 14, 2006, as Appl. No. 11/423,999. | ||
| Int. Cl. G10C 3/12 (2006.01) | ||
| U.S. Cl. 84—424 [84/423 R; 84/425; 84/428; 84/432; 84/718; 84/719; 84/720; 84/477 R; 84/478; 84/743; 84/744; 84/745; 84/483.1; 84/483.2] | 15 Claims |

| 1. A musical keyboard split into two bisymmetrical manuals, comprising:
a first manual for keyboard fingering by a first hand of a user, comprising a first plurality of keys activating a standard
pitch progression increasing in pitch from left to right;
a second manual for keyboard fingering by a second hand of a user, spilt from said first manual, comprising a second plurality
of keys activating a standard pitch progression increasing in pitch from right to left; wherein:
said keyboard fingering for the first hand applied to said first manual is exactly the same as said keyboard fingering for
the second hand applied to said second manual.
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