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Priority to JP1975058969UpriorityCriticalpatent/JPS549880Y2/ja
Priority to GB1319976Aprioritypatent/GB1549055A/en
Priority to FR7612266Aprioritypatent/FR2311750A1/fr
Priority to DE19762618243prioritypatent/DE2618243C3/de
Publication of JPS51137444UpublicationCriticalpatent/JPS51137444U/ja
Application grantedgrantedCritical
Publication of JPS549880Y2publicationCriticalpatent/JPS549880Y2/ja