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electric widerstandsschweissverfahren, especially the series maessigen manufacture of packaging and all kinds of blechgefaessen from normal sheets, e.g. black plate or plates to metallauflage, e.g. (continued
electric widerstandsschweissverfahren, especially the series maessigen manufacture of packaging and all kinds of blechgefaessen from normal sheets, e.g. black plate or plates to metallauflage, e.g. (continued
