Title:
トンネル工事用エアカーテン装置
Document Type and Number:
Japanese Patent JP4037305
Kind Code:
B2
Inventors:
Tomoyuki Nagayama
Ken Sonoda
Toshiaki Ono
Toshio Abe
Ken Sonoda
Toshiaki Ono
Toshio Abe
Application Number:
JP2003094563A
Publication Date:
January 23, 2008
Filing Date:
March 31, 2003
Export Citation:
Assignee:
Nishimatsu Construction Co., Ltd.
International Classes:
E21F5/00; F24F7/06; F24F9/00
Domestic Patent References:
| JP5376530A | ||||
| JP5865900A |
Attorney, Agent or Firm:
Hiroshi Arafune
Yoshio Arafune
Yoshio Arafune