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.)
Filing date
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Application filedfiledCritical
Priority to DD17771374ApriorityCriticalpatent/DD112816A1/xx
Priority to SU742084492Aprioritypatent/SU826124A1/ru
Priority to CS221975Aprioritypatent/CS183073B1/cs
Priority to YU85875Aprioritypatent/YU36555B/xx
Priority to RO7582880Aprioritypatent/RO70801A/ro
Publication of DD112816A1publicationCriticalpatent/DD112816A1/xx