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Priority to CS546272ApriorityCriticalpatent/CS159061B1/cs
Priority to HU73VI00000932Aprioritypatent/HU170913B/hu
Priority to DD17218773Aprioritypatent/DD106912A1/xx
Priority to BG2420373Aprioritypatent/BG22689A1/xx
Priority to SU731950285Aprioritypatent/SU737986A1/ru
Publication of CS159061B1publicationCriticalpatent/CS159061B1/cs