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Priority to JP2716976UpriorityCriticalpatent/JPS5631746Y2/ja
Priority to GB9206/77Aprioritypatent/GB1577900A/en
Priority to MX77168264Aprioritypatent/MX144283A/es
Priority to US05/775,375prioritypatent/US4156276A/en
Publication of JPS52118678UpublicationCriticalpatent/JPS52118678U/ja
Application grantedgrantedCritical
Publication of JPS5631746Y2publicationCriticalpatent/JPS5631746Y2/ja