水平方向掘削先端位置の測定システム - Railway Technical Research Institute

Title:

水平方向掘削先端位置の測定システム

Document Type and Number:

Japanese Patent JP4536500

Kind Code:

B2

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Inventors:

Kimiaki Sasaki
Shogo Kamoshita
Mineyuki Asahina
Watanabe Gen

Application Number:

JP2004352129A

Publication Date:

September 01, 2010

Filing Date:

December 06, 2004

Export Citation:

Assignee:

Railway Technical Research Institute
JR Research Institute, Inc. Information System

International Classes:

G01C15/00; E21D9/06

Domestic Patent References:

Attorney, Agent or Firm:

Mamoru Shimizu
Makoto Kawai

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