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Title:
【発明の名称】地下トンネルの構築工法
Document Type and Number:
Japanese Patent JPS5911040
Kind Code:
B2
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Inventors:
ITO TOMOO
Application Number:
JP6428481A
Publication Date:
March 13, 1984
Filing Date:
April 30, 1981
Export Citation:
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Assignee:
ITO TOMOO
International Classes:
E21D9/00; (IPC1-7): E21D9/00
Attorney, Agent or Firm:
NAGURA Isamu



 
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