PROPELLING AND DRILLING MACHINE AND COMPENSATION OF PROPELLING DIRECTION

Title:

PROPELLING AND DRILLING MACHINE AND COMPENSATION OF PROPELLING DIRECTION

Document Type and Number:

Japanese Patent JPS5829996

Kind Code:

A

Inventors:

IWASHITA FUMIHIKO
URAMOTO TOSHIAKI
OOMORI HIROSHI
YAMAMOTO TAKAFUMI

Application Number:

JP12596681A

Publication Date:

February 22, 1983

Filing Date:

August 13, 1981

Export Citation:

Assignee:

NIPPON KOKAN KK

International Classes:

E21D9/093; E21D9/08; (IPC1-7): E21D9/08

Attorney, Agent or Firm:

Masatoshi Sato

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