Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Marconis Wireless Telegraph Co Ltd, Marconi Co LtdfiledCriticalMarconis Wireless Telegraph Co Ltd
Application grantedgrantedCritical
Publication of FR661117ApublicationCriticalpatent/FR661117A/fr
H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
H04R1/00—Details of transducers, loudspeakers or microphones
H04R1/16—Mounting or connecting stylus to transducer with or without damping means
Landscapes
Physics & Mathematics
(AREA)
Engineering & Computer Science
(AREA)
Acoustics & Sound
(AREA)
Signal Processing
(AREA)
Electrophonic Musical Instruments
(AREA)
FR661117D1927-10-251928-09-27Perfectionnements aux dispositifs électromagnétiques de reproduction et d'enregistrement pour phonographes
ExpiredFR661117A
(fr)
Perfectionnements aux dispositifs électromagnétiques pour la traduction des vibrations, particuliè rement applicables à l'enregistrement et à la reproduction des sons
Perfectionnements apportés aux dispositifs pour l'entraînement synchrone d'appareils pour l'enregistrement ou la reproduction de sons et d'images