Title:
FRICTIONAL BASE ROCK SAFETY DEVICE AND METHOD OF INSERTING SAID DEVICE INTO GROUND STRUCTURE BORE
Document Type and Number:
Japanese Patent JPS57158499
Kind Code:
A
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Inventors:
JIEEMUSU FUAANANDO KANTORERU
Application Number:
JP4051281A
Publication Date:
September 30, 1982
Filing Date:
March 23, 1981
Export Citation:
Assignee:
INGERSOLL RAND CO
International Classes:
E21D21/00; E21D20/00; (IPC1-7): E21D20/00; E21D21/00