Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filedfiledCritical
Priority to JP7840475ApriorityCriticalpatent/JPS522041A/ja
Publication of JPS522041ApublicationCriticalpatent/JPS522041A/ja
Publication of JPS5336937B2publicationCriticalpatent/JPS5336937B2/ja
JP7840475A1975-06-241975-06-24Method of discharging earth and sand in method of compressed air shield construction and its device
GrantedJPS522041A
(en)