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FRANCK DUROQUIER
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FRANCK DUROQUIER
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Publication of FR452467ApublicationCriticalpatent/FR452467A/fr
H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
H01F21/00—Variable inductances or transformers of the signal type
H01F21/12—Variable inductances or transformers of the signal type discontinuously variable, e.g. tapped
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Engineering & Computer Science
(AREA)
Power Engineering
(AREA)
FR452467D1912-12-281912-12-28Sélecteur, appareil d'accord et de réglage pour circuits de réception de télégraphie et de téléphonie sans fil
ExpiredFR452467A
(fr)