Title:
掘削ズリの排出機構
Document Type and Number:
Japanese Patent JP4047143
Kind Code:
B2
Inventors:
Takayoshi Nakayama
Naori Hoshino
Tetsuya Yokoyama
Junji Ono
Naori Hoshino
Tetsuya Yokoyama
Junji Ono
Application Number:
JP2002332935A
Publication Date:
February 13, 2008
Filing Date:
November 15, 2002
Export Citation:
Assignee:
Okumura Gumi Co., Ltd.
International Classes:
E21D9/12; E21D9/06; E21D9/10; E21D9/13
Domestic Patent References:
| JP7004167A | ||||
| JP9291781A | ||||
| JP49070404A | ||||
| JP2000110491A |
Attorney, Agent or Firm:
Takuya Yamamoto