Title:
マンホールの構造
Document Type and Number:
Japanese Patent JP4866713
Kind Code:
B2
Inventors:
Yanai Makoto
Nagaoka Shingen
Nagaoka Shingen
Application Number:
JP2006330994A
Publication Date:
February 01, 2012
Filing Date:
December 07, 2006
Export Citation:
Assignee:
Makoto Yanai
International Classes:
E02D29/12; E02D31/12
Domestic Patent References:
| JP2006193900A | ||||
| JP10018324A | ||||
| JP11222874A | ||||
| JP61050140U | ||||
| JP2006194033A | ||||
| JP2006183244A | ||||
| JP2006124966A | ||||
| JP2008002180A |
Attorney, Agent or Firm:
Sakuo Yamaguchi