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Priority to JP9055875ApriorityCriticalpatent/JPS5214015A/ja
Publication of JPS5214015ApublicationCriticalpatent/JPS5214015A/ja
Publication of JPS5535537B2publicationCriticalpatent/JPS5535537B2/ja
JP9055875A1975-07-241975-07-24Equipment for excavating and for forcedly turning down soil wall to construct culvert without reinforcing
GrantedJPS5214015A
(en)