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Application filed by Ericsson Telefon Ab L MfiledCriticalEricsson Telefon Ab L M
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Publication of DK79356CpublicationCriticalpatent/DK79356C/da
Fremgangsmåde til fremstilling af fjedergrupper til elektriske koblingsapparater og koblingsplinter samt ved fremgangsmåden fremstillede fjedergrupper.