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Application filed by Jaroslav JirasekfiledCriticalJaroslav Jirasek
Priority to CS172175ApriorityCriticalpatent/CS186918B1/cs
Publication of CS186918B1publicationCriticalpatent/CS186918B1/cs
CS172175A1975-03-141975-03-14Automatic appliance for checking under operation the function and parameters of railway safeguarding devices
CS186918B1
(en)