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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 filed by IndividualfiledCriticalIndividual
Priority to JP14609375ApriorityCriticalpatent/JPS5270546A/en
Publication of JPS5270546ApublicationCriticalpatent/JPS5270546A/en
Publication of JPS5339695B2publicationCriticalpatent/JPS5339695B2/ja
JP14609375A1975-12-081975-12-08Preventive method of earth and sand breaking* flowing water* etc* from facing in excavation construction
GrantedJPS5270546A
(en)
Method of excavation construction and gravel removing device for discharge pipe in method of propulsion construction and method of measuring excavated earth and sand