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Priority to JP43074653ApriorityCriticalpatent/JPS497632B1/ja
Priority to US866192Aprioritypatent/US3612960A/en
Priority to DE19691951986prioritypatent/DE1951986A1/de
Priority to NL6915569Aprioritypatent/NL6915569A/xx
Publication of JPS497632B1publicationCriticalpatent/JPS497632B1/ja