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Application filed by Otto M Ing KaestnerfiledCriticalOtto M Ing Kaestner
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Publication of AT209193BpublicationCriticalpatent/AT209193B/de
Vorrichtung zum unmittelbar aufeinanderfolgenden, schrittweisen Injizieren von Beton, Zementmilch od.dgl. in aufeinanderfolgend höherliegenden Horizonten eines Bohrloches