Title:
【発明の名称】脆性物体の破砕方法
Document Type and Number:
Japanese Patent JP2973121
Kind Code:
B2
Inventors:
Ishii Shiro
Hidenobu Tadokoro
Toshiharu Hinata
Hidenobu Tadokoro
Toshiharu Hinata
Application Number:
JP11377189A
Publication Date:
November 08, 1999
Filing Date:
May 08, 1989
Export Citation:
Assignee:
Onoda Co., Ltd.
International Classes:
E21B10/00; B25D1/02; B25D17/02; B28D1/00; E21C37/00; E21C37/06; (IPC1-7): E21C37/00
Domestic Patent References:
| JP63151792A | ||||
| JP5930879B2 | ||||
| JP6136620Y2 |
Attorney, Agent or Firm:
Koya Konno (1 person outside)