Title:
【考案の名称】ボ―リングコアの引抜き装置
Document Type and Number:
Japanese Patent JP2501152
Kind Code:
Y2
Inventors:
Yasuaki Mori
Application Number:
JP9487191U
Publication Date:
June 12, 1996
Filing Date:
November 19, 1991
Export Citation:
Assignee:
Daiichi Diamond Construction Co., Ltd.
International Classes:
E21B3/02; B23B51/04; B28D1/14; E21B25/00; (IPC1-7): B28D1/14; B23B51/04
Domestic Patent References:
| JP591515U |
Attorney, Agent or Firm:
Matsumoto Masatoshi