【発明の名称】立坑の構築方法

Title:

【発明の名称】立坑の構築方法

Document Type and Number:

Japanese Patent JP3124704

Kind Code:

B2

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Inventors:

Yoshishi Matsumoto

Application Number:

JP9970595A

Publication Date:

January 15, 2001

Filing Date:

March 31, 1995

Export Citation:

Assignee:

Yoshishi Matsumoto

International Classes:

E21D1/03; (IPC1-7): E21D1/03

Domestic Patent References:

Attorney, Agent or Firm:

Seiichi Inoue

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