Title:
施工中トンネル内の換気方法
Document Type and Number:
Japanese Patent JP4454163
Kind Code:
B2
Inventors:
Takashi Okada
Makoto Kishitani
Akira Nishimura
Makoto Kishitani
Akira Nishimura
Application Number:
JP2001017707A
Publication Date:
April 21, 2010
Filing Date:
January 26, 2001
Export Citation:
Assignee:
Kumagai Gumi Co., Ltd.
Ryuuki Engineering Co., Ltd.
Ryuuki Engineering Co., Ltd.
International Classes:
E21F1/00; E21F5/20; F24F7/06; F24F9/00
Domestic Patent References:
| JP62017345U | ||||
| JP9151700A | ||||
| JP11023032A | ||||
| JP10252400A | ||||
| JP63265100A | ||||
| JP61294100A |
Attorney, Agent or Firm:
Masahisa Ishida