Legal status (The legal status 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 status listed.)
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 to JP5575476ApriorityCriticalpatent/JPS52138421A/ja
Priority to SE7705578Aprioritypatent/SE7705578L/
Priority to DE2721998Aprioritypatent/DE2721998C2/de
Priority to US05/797,115prioritypatent/US4141762A/en
Publication of JPS52138421ApublicationCriticalpatent/JPS52138421A/ja
Publication of JPS5625264B2publicationCriticalpatent/JPS5625264B2/ja