Title:
シールドトンネル工事等における坑内換気用レジューサ
Document Type and Number:
Japanese Patent JP3586525
Kind Code:
B2
Inventors:
Akihiko Nakanishi
Hidekazu Wada
Ryuji Tsutsui
Toshio Shimoda
Hidekazu Wada
Ryuji Tsutsui
Toshio Shimoda
Application Number:
JP29126596A
Publication Date:
November 10, 2004
Filing Date:
October 15, 1996
Export Citation:
Assignee:
Izumi Co., Ltd.
International Classes:
E21F1/08; F15D1/02; F16L25/00; F24F7/06; F24F13/02; (IPC1-7): F15D1/02; E21F1/08; F16L25/00; F24F7/06; F24F13/02
Domestic Patent References:
| JP52075834A | ||||
| JP48107654U | ||||
| JP6082197U |
Attorney, Agent or Firm:
Morinosuke Higuchi
Yoshikuni Koizumi
Yoshikuni Koizumi