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H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
H01F27/00—Details of transformers or inductances, in general
H01F27/004—Arrangements for interchanging inductances, transformers or coils thereof
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FR619910D1926-07-161926-07-16Perfectionnements aux dispositifs de réglage des bobines de self dans les postes àlampes de téléphonie sans fil
ExpiredFR619910A
(fr)