Title:
【発明の名称】地盤削孔装置
Document Type and Number:
Japanese Patent JPS5937387
Kind Code:
B2
Inventors:
MURAKAMI HIROSHI
TAKAOKA AKIO
TAKAOKA AKIO
Application Number:
JP5997475A
Publication Date:
September 10, 1984
Filing Date:
May 20, 1975
Export Citation:
Assignee:
OKABE KK
International Classes:
E21B7/20; E21B6/02; E21B7/00; E21B17/18; (IPC1-7): E21B6/00; E21B17/04
Attorney, Agent or Firm:
Fumikazu Miyatake
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