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
Publication date
Application filedfiledCritical
Priority to CS470274ApriorityCriticalpatent/CS172037B1/cs
Priority to DD18662875Aprioritypatent/DD118780A5/xx
Priority to HU75AO415Aprioritypatent/HU174533B/hu
Publication of CS172037B1publicationCriticalpatent/CS172037B1/cs