【発明の名称】立坑掘削装置

Title:

【発明の名称】立坑掘削装置

Document Type and Number:

Japanese Patent JP2974670

Kind Code:

B1

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Inventors:

ISOBE IWAO
SHIMAI MORYUKI
YOSHINAGA MASARU
KOTAKI YUTAKA

Application Number:

JP29818798A

Publication Date:

November 10, 1999

Filing Date:

October 20, 1998

Export Citation:

Assignee:

KAJIMA KENSETSU KK

International Classes:

E21B3/02; E21B7/20; E21D1/06; (IPC1-7): E21D1/06; E21B3/02; E21B7/20

Domestic Patent References:

JP610581A
JP650083A

Attorney, Agent or Firm:

Toshitada Takahashi (1 outside)

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