IPC Subgroup
H04R 11/08 Gramophone pick-ups using a stylus; Recorders using a stylus
Introduced: September 1968
Last revised: January 2006
Full Title
Transducers of moving-armature or moving-core type > Gramophone pick-ups using a stylus; Recorders using a stylus
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
2 direct subcodes
Child Classifications
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- H04R 11/1 comprising two or more styli or transducers
- H04R 11/12 signals being recorded or played-back by vibration of a stylus in two orthogonal directions simultaneously