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International Standard Electric Corp
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International Standard Electric Corp
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Application filed by International Standard Electric CorpfiledCriticalInternational Standard Electric Corp
Application grantedgrantedCritical
Publication of FR65257EpublicationCriticalpatent/FR65257E/fr
H01H67/26—Co-ordinate-type selector switches not having relays at cross-points but involving mechanical movement, e.g. cross-bar switch, code-bar switch
FR65257D1952-11-251952-11-25Commutateurs électriques tels que ceux utilisés dans les systèmes téléphoniques
ExpiredFR65257E
(fr)