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Priority to JP14259775ApriorityCriticalpatent/JPS5265955A/ja
Publication of JPS5265955ApublicationCriticalpatent/JPS5265955A/ja
Publication of JPS578267B2publicationCriticalpatent/JPS578267B2/ja
JP14259775A1975-11-261975-11-26Method and device for controlling door opening and closing using flowing solid as pressuring medium
GrantedJPS5265955A
(en)