Education and demonstration – Cathode ray screen display and audio means
Reexamination Certificate
2007-02-27
2007-02-27
Cheng, Joe H. (Department: 3715)
Education and demonstration
Cathode ray screen display and audio means
C434S30700R, C084S47000P
Reexamination Certificate
active
10624846
ABSTRACT:
A learning aid and a method of making and using it are disclosed, and relate to the configuring of chord indicia in an ordered sequence to designate groups of chords for certain given musical keys. The chord indicia and musical key indicia are arranged in a matrix. The matrix is arranged in overlapping columns, and each column is designated with an individual one of the musical key indicia. The columns are arranged such that each group of chords comprises a plurality of columns such that each key indicia comprises a designated column and at least one adjacent other key column.
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Cheng Joe H.
Duckor Spradling Metzger & Wynne
Heslip Stephen
Kleinke Bernard L.
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