METHOD OF CONSTRUCTION OF EXCAVATION AND ITS DEVICE

Title:

METHOD OF CONSTRUCTION OF EXCAVATION AND ITS DEVICE

Document Type and Number:

Japanese Patent JPS5451211

Kind Code:

A

Inventors:

NIIMI YOSHIKAZU
ISA TAKAYOSHI
EGUCHI TAKUMI

Application Number:

JP11744277A

Publication Date:

April 21, 1979

Filing Date:

September 30, 1977

Export Citation:

Assignee:

NIPPON STEEL CORP
KOKEN BORING MACHINE CO

International Classes:

E02D5/38; E21B7/20; (IPC1-7): E02D5/38; E02D17/14

Domestic Patent References:

JP33010074A

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