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Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
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Industry
CPC
H04R1/24
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Parent Industries
H
ELECTRICITY
H04
Electric communication
H04R
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS DEAF-AID SETS PUBLIC ADDRESS SYSTEMS
H04R1/00
Details of transducers, loudspeakers or microphones
Current Industry
H04R1/24
Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
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