Title:
【発明の名称】推進工法用立坑とその施工方法
Document Type and Number:
Japanese Patent JP2797274
Kind Code:
B2
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Inventors:
Yoshiki Hayashi
Application Number:
JP9607996A
Publication Date:
September 17, 1998
Filing Date:
March 26, 1996
Export Citation:
Assignee:
Yamato Cress Co., Ltd.
International Classes:
E21B7/20; E21D1/08; E21D9/06; (IPC1-7): E21D1/08; E21D9/06
Domestic Patent References:
| JP8121077A | ||||
| JP8114087A | ||||
| JP8114086A | ||||
| JP6088786A |
Attorney, Agent or Firm:
Masuda Mamoru