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Title:
【発明の名称】トンネルの保護方法
Document Type and Number:
Japanese Patent JPS602478
Kind Code:
B2
Inventors:
OKADA KATSUYA
KAWAGUCHI TAKAO
HOSHINO TAKAHIRO
Application Number:
JP1918880A
Publication Date:
January 22, 1985
Filing Date:
February 20, 1980
Export Citation:
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Assignee:
NIPPON KOKUJU TETSUDO
TOYO BUTSUSAN KK
International Classes:
E21D11/38; (IPC1-7): E21D11/38
Attorney, Agent or Firm:
Ryokuni Koizumi



 
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