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reklamevorrichtung, in a schraubenfeder haengende reklametraeger by kraftstoesse a selbsttaetig through quecksilberkippschalters alternately excited electromagnet in high and declining movement transfer
reklamevorrichtung, in a schraubenfeder haengende reklametraeger by kraftstoesse a selbsttaetig through quecksilberkippschalters alternately excited electromagnet in high and declining movement transfer