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G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
G10K5/00—Whistles
G10K5/02—Ultrasonic whistles
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Agricultural Chemicals And Associated Chemicals
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Un procedimiento para el mezclado continuo y uniforme de cantidades relativamente pequenas de aditivo liquido o li- cuado con cantidades relativamente grandes de material gra- nulado solido