Title:
【考案の名称】油圧さく岩機の打撃機構の油圧回路
Document Type and Number:
Japanese Patent JPH0714475
Kind Code:
Y2
Inventors:
Kazuya Goto
Application Number:
JP6153090U
Publication Date:
April 10, 1995
Filing Date:
June 11, 1990
Export Citation:
Assignee:
Furukawa Metal Co., Ltd.
International Classes:
E21B1/26; E21B1/00; (IPC1-7): E21C3/20
Domestic Patent References:
| JP56121794U |
Attorney, Agent or Firm:
Tetsuya Mori (3 others)
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