【発明の名称】トンネル壁面のはつり装置

Title:

【発明の名称】トンネル壁面のはつり装置

Document Type and Number:

Japanese Patent JPH0788754

Kind Code:

B2

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Inventors:

Yuji Hosaka
Shiina Shoichi
Shibuya Jin

Application Number:

JP30282088A

Publication Date:

September 27, 1995

Filing Date:

November 30, 1988

Export Citation:

Assignee:

Obayashi Corporation

International Classes:

B25D17/28; B25D9/26; E21B7/02; E21B15/00; E21B19/08; E21D11/00; (IPC1-7): E21D11/00; B25D9/26

Domestic Patent References:

Attorney, Agent or Firm:

Kensuke Isshiki (1 person outside)

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