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Title:
APPARATUS FOR CORRECTING DISPLACEMENT OF PROPELLING CONSTRUCTION METHOD
Document Type and Number:
Japanese Patent JPS59102080
Kind Code:
A
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Inventors:
HIROHATA YUKINORI
Application Number:
JP21090082A
Publication Date:
June 12, 1984
Filing Date:
December 01, 1982
Export Citation:
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Assignee:
TONE BORING CO
International Classes:
E21D9/093; E21D9/06; (IPC1-7): E21D9/06
Attorney, Agent or Firm:
Unuma Tatsuyuki



 
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