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.)
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Priority claimed from GB4735470Aexternal-prioritypatent/GB1367067A/en
Application filedfiledCritical
Priority to HUWI000199priorityCriticalpatent/HU163970B/hu
Publication of HU163970BpublicationCriticalpatent/HU163970B/hu