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 DD16691272ApriorityCriticalpatent/DD101102A2/xx
Priority to DE19722258846prioritypatent/DE2258846A1/de
Priority to HUCE000907prioritypatent/HU165792B/hu
Priority to CS883472Aprioritypatent/CS177464B1/cs
Priority to CH1862072Aprioritypatent/CH549771A/xx
Publication of DD101102A2publicationCriticalpatent/DD101102A2/xx