Dr1

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G - Physics

09

B

G09B 15/06 (2006.01) G10D 7/10 (2006.01)

Patent

CA 2082221

FORM 24 (ss. 21,34 and 142) ABSTRACT This invention is a device for practice and aiding in the study of music. It is a manually operated hand held tool for TRUMPET players.

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