- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; deaf-aid sets; public address systems
- H04R 17/06 - Gramophone pick-ups using a stylus; Recorders using a stylus comprising two or more styli or transducers
Patent holdings for IPC class H04R 17/06
Total number of patents in this class: 0
10-year publication summary
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Principal owners for this class
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