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Application filed by Alojz Ing Trutz, Marian Ing PulmannfiledCriticalAlojz Ing Trutz
Priority to CS831219ApriorityCriticalpatent/CS238859B1/en
Publication of CS121983A1publicationCriticalpatent/CS121983A1/en
Publication of CS238859B1publicationCriticalpatent/CS238859B1/en