切羽養生方法 - East Japan Railway Company

Title:

切羽養生方法

Document Type and Number:

Japanese Patent JP4282784

Kind Code:

B2

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Inventors:

Sonoda Masamitsu
Junichi Horigome
Kenji Asano
Toru Kubo
Toshio Waki
Masahiro Kurosaka

Application Number:

JP2356698A

Publication Date:

June 24, 2009

Filing Date:

February 04, 1998

Export Citation:

Assignee:

East Japan Railway Company
Shimizu Construction Co., Ltd.

International Classes:

E21D19/00; E21F15/02; E21F15/08

Domestic Patent References:

Attorney, Agent or Firm:

Masatake Shiga
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama

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