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Priority to JP1968015002UpriorityCriticalpatent/JPS4516198Y1/ja
Priority to US749855Aprioritypatent/US3584159A/en
Priority to DE19681774665prioritypatent/DE1774665C3/de
Priority to FR1604727Dprioritypatent/FR1604727A/fr
Priority to NL6818437Aprioritypatent/NL6818437A/xx
Priority to GB9257/69Aprioritypatent/GB1259878A/en
Publication of JPS4516198Y1publicationCriticalpatent/JPS4516198Y1/ja