Title:
【発明の名称】推進工法用管の構造
Document Type and Number:
Japanese Patent JP2648180
Kind Code:
B2
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Inventors:
MISONO KAZUO
SAKAMOTO NAOTO
SAKAMOTO NAOTO
Application Number:
JP18003088A
Publication Date:
August 27, 1997
Filing Date:
July 19, 1988
Export Citation:
Assignee:
KUBOTA KK
International Classes:
E21D9/06; E21D9/00; F16L9/14; (IPC1-7): E21D9/06
Domestic Patent References:
| JP4897981A | ||||
| JP4969705U | ||||
| JP58106495U | ||||
| JP6266996U |
Attorney, Agent or Firm:
Yoshihiro Morimoto