ANCHOR* PARTICULARLY RAM ANCHOR WHICH STRENGTHENS DUCT* TUNNEL AND SO ON USED FOR ROCK MOUNTAINS

Title:

ANCHOR* PARTICULARLY RAM ANCHOR WHICH STRENGTHENS DUCT* TUNNEL AND SO ON USED FOR ROCK MOUNTAINS

Document Type and Number:

Japanese Patent JPS527110

Kind Code:

A

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Inventors:

RUDORUFU GURUUBAA

Application Number:

JP8149675A

Publication Date:

January 20, 1977

Filing Date:

July 03, 1975

Export Citation:

Assignee:

GD ANKER GMBH & CO KG

International Classes:

E21D20/00; E02D5/80; E21D20/02; E21D21/00; (IPC1-7): E02D5/80; E21D20/02

Domestic Patent References:

JP45025538A

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