Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Petr StranikfiledCriticalPetr Stranik
Priority to CS833902ApriorityCriticalpatent/CS251306B1/en
Publication of CS390283A1publicationCriticalpatent/CS390283A1/en
Publication of CS251306B1publicationCriticalpatent/CS251306B1/en