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.)
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Sparks Withington Co
Original Assignee
Sparks Withington Co
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Filing date
Publication date
Application filed by Sparks Withington CofiledCriticalSparks Withington Co
Application grantedgrantedCritical
Publication of FR703308ApublicationCriticalpatent/FR703308A/fr
H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
H04B1/06—Receivers
H04B1/16—Circuits
H04B1/20—Circuits for coupling gramophone pick-up, recorder output, or microphone to receiver
Landscapes
Engineering & Computer Science
(AREA)
Computer Networks & Wireless Communication
(AREA)
Signal Processing
(AREA)
Amplifiers
(AREA)
Dc-Dc Converters
(AREA)
FR703308D1929-10-051930-10-04Perfectionnements aux appareils pour la reproduction des sons
ExpiredFR703308A
(fr)