TREA

of the type wherein an air current is directed against a ramp edge

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  • CPC
  • G10D7/02
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Parent Industries

GPHYSICS G10Musical instruments G10DSTRINGED MUSICAL INSTRUMENTS WIND-ACTUATED MUSICAL INSTRUMENTS ACCORDIONS OR CONCERTINAS PERCUSSION MUSICAL INSTRUMENTS MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR G10D7/00General design of wind-actuated musical instruments

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G10D7/02of the type wherein an air current is directed against a ramp edge
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