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Priority to JP2117871UpriorityCriticalpatent/JPS4715956U/ja
Priority to US00237005Aprioritypatent/US3778572A/en
Priority to AU40369/72Aprioritypatent/AU452892B2/en
Priority to FR7210462Aprioritypatent/FR2130681B1/fr
Priority to DE2214478Aprioritypatent/DE2214478C3/de
Publication of JPS4715956UpublicationCriticalpatent/JPS4715956U/ja