Title:
【発明の名称】地中構造物腐食調査のための空洞作成方法及びその装置
Document Type and Number:
Japanese Patent JP2866498
Kind Code:
B2
Inventors:
KUDO KOJI
YOSHIDA YASUO
YOSHIDA YASUO
Application Number:
JP12279991A
Publication Date:
March 08, 1999
Filing Date:
April 26, 1991
Export Citation:
Assignee:
DENRYOKU CHUO KENKYUSHO
International Classes:
E02D3/12; E02D33/00; E21B7/18; E21B47/026; (IPC1-7): E21B47/026; E02D3/12; E02D33/00; E21B7/18
Attorney, Agent or Firm:
Murase Kazumi