Title:
【考案の名称】衝撃工具のロッド引抜き用逆衝撃装置
Document Type and Number:
Japanese Patent JP2561212
Kind Code:
Y2
Inventors:
Kobayashi Isao
Application Number:
JP7502591U
Publication Date:
January 28, 1998
Filing Date:
September 18, 1991
Export Citation:
Assignee:
Furukawa Metal Co., Ltd.
International Classes:
B25D9/06; E21B1/00; E21B1/26; (IPC1-7): B25D9/06; E21C3/20
Domestic Patent References:
| JP61204496A | ||||
| JP1141893U | ||||
| JP211890U | ||||
| JP4536564B1 |
Attorney, Agent or Firm:
Tetsuya Mori (2 others)