Title:
マンホール設置安定化構造
Document Type and Number:
Japanese Patent JP4776569
Kind Code:
B2
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Inventors:
Shinkichi Ooka
Zhang Manra
Zhang Manra
Application Number:
JP2007057337A
Publication Date:
September 21, 2011
Filing Date:
March 07, 2007
Export Citation:
Assignee:
Yoshika Co., Ltd.
International Classes:
E02D29/12; E02D31/12
Domestic Patent References:
| JP2005248496A | ||||
| JP2005320799A |
Attorney, Agent or Firm:
Satoshi Eto