Title:
浮上防止マンホール用底版及び浮上防止マンホール用底版で構成した組立式マンホール
Document Type and Number:
Japanese Patent JP4886596
Kind Code:
B2
Inventors:
Satoshi Ohira
Hideki Sakakibara
Hideki Sakakibara
Application Number:
JP2007139600A
Publication Date:
February 29, 2012
Filing Date:
May 25, 2007
Export Citation:
Assignee:
Hanex Co., Ltd.
International Classes:
E02D29/12; E02D31/12; E03F5/10
Domestic Patent References:
| JP2000291038A | ||||
| JP3120761U | ||||
| JP61050140U | ||||
| JP2005344498A |
Attorney, Agent or Firm:
Mitsuru Ito