Title:
掘削施工中のトンネル換気方法及び換気システム
Document Type and Number:
Japanese Patent JP5101376
Kind Code:
B2
Inventors:
Tomoharu Kakihara
Application Number:
JP2008105535A
Publication Date:
December 19, 2012
Filing Date:
April 15, 2008
Export Citation:
Assignee:
MAEDA CORPORATION
International Classes:
E21F1/00; F24F7/06
Domestic Patent References:
| JP3002500A | ||||
| JP2002221000A | ||||
| JP10252400A | ||||
| JP9151700A | ||||
| JP8121099A | ||||
| JP2070900A |
Attorney, Agent or Firm:
Yoshitaka Kobayashi