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Publication of FR815533ApublicationCriticalpatent/FR815533A/fr
H04M1/00—Substation equipment, e.g. for use by subscribers
H04M1/02—Constructional features of telephone sets
H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
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FR815533D1936-12-261936-12-26Dispositif à manette pour composer les numéros d'appel sur les cadrans des postes de téléphone automatique
ExpiredFR815533A
(fr)