Title:
【考案の名称】海底岩盤破砕装置
Document Type and Number:
Japanese Patent JPH0728233
Kind Code:
Y2
Inventors:
Seiichi Miyata
Kiyoshi Toyoda
Kiyoshi Toyoda
Application Number:
JP360289U
Publication Date:
June 28, 1995
Filing Date:
January 17, 1989
Export Citation:
Assignee:
Sumitomo Heavy Industries Ltd.
Morinagagumi Co., Ltd.
Morinagagumi Co., Ltd.
International Classes:
E21B1/04; E21B1/00; E21B3/00; E21B7/132; (IPC1-7): E21B7/132
Domestic Patent References:
| JP56154490U | ||||
| JP6091693U | ||||
| JP6184789U |
Attorney, Agent or Firm:
Somekichi Rikichi
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