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Priority to JP1972072897UpriorityCriticalpatent/JPS556230Y2/ja
Priority to US365731Aprioritypatent/US3911367A/en
Priority to CA173,037Aprioritypatent/CA979514A/en
Priority to DE2328396Aprioritypatent/DE2328396C3/de
Publication of JPS4929395UpublicationCriticalpatent/JPS4929395U/ja
Application grantedgrantedCritical
Publication of JPS556230Y2publicationCriticalpatent/JPS556230Y2/ja