Title:
トンネル坑内の換気方法
Document Type and Number:
Japanese Patent JP4217958
Kind Code:
B2
Inventors:
Masayuki Shimizu
Hiroaki Tagawa
Tsutomu Kiuchi
Toshihiko Wada
Hiroaki Tagawa
Tsutomu Kiuchi
Toshihiko Wada
Application Number:
JP2003137217A
Publication Date:
February 04, 2009
Filing Date:
May 15, 2003
Export Citation:
Assignee:
Shimizu Construction Co., Ltd.
International Classes:
E21F1/00; E21F1/04; E21F17/103; F24F7/06; F24F9/00
Domestic Patent References:
| JP2002349199A | ||||
| JP6089640B2 | ||||
| JP8004498A | ||||
| JP2002349200A |
Foreign References:
| DE3041718A1 |
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama