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 CS519371ApriorityCriticalpatent/CS158416B1/cs
Priority to FR7216851Aprioritypatent/FR2137786A1/fr
Priority to NL7206451Aprioritypatent/NL7206451A/xx
Priority to DE19722223301prioritypatent/DE2223301A1/de
Priority to YU1269/72Aprioritypatent/YU34759B/xx
Publication of CS158416B1publicationCriticalpatent/CS158416B1/cs