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 CS728870*ApriorityCriticalpatent/CS152783B1/cs
Priority to CH871970Aprioritypatent/CH553237A/xx
Priority to HUCE000762prioritypatent/HU163499B/hu
Priority to DE19702028752prioritypatent/DE2028752A1/de
Priority to GB2846570Aprioritypatent/GB1313538A/en
Priority to RO6362270Aprioritypatent/RO62002A/ro
Publication of CS152783B1publicationCriticalpatent/CS152783B1/cs