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 CS5642ApriorityCriticalpatent/CS176576B1/cs
Priority to CH986775Aprioritypatent/CH601540A5/xx
Priority to GB33051/75Aprioritypatent/GB1486153A/en
Priority to FR7525119Aprioritypatent/FR2282008A1/fr
Priority to JP50097244Aprioritypatent/JPS5147144A/ja
Publication of CS176576B1publicationCriticalpatent/CS176576B1/cs