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Application filed by Robert Doc Ing Csc Palka, Peter Ing Tittel, Jan Ing Spevak, Jozef Ing Lukac, Emil Ing Janosov, Leonard Ing YdafiledCriticalRobert Doc Ing Csc Palka
Priority to CS856790ApriorityCriticalpatent/CS252883B1/en
Publication of CS679085A1publicationCriticalpatent/CS679085A1/en
Publication of CS252883B1publicationCriticalpatent/CS252883B1/en