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Priority to JP8703472UpriorityCriticalpatent/JPS4943997U/ja
Priority to US00296750Aprioritypatent/US3822662A/en
Priority to CA154,095Aprioritypatent/CA962532A/en
Priority to GB4777272Aprioritypatent/GB1397280A/en
Priority to NO375372Aprioritypatent/NO137433C/no
Publication of JPS4943997UpublicationCriticalpatent/JPS4943997U/ja