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Title:
機械幅の変わる竪坑掘削装置
Document Type and Number:
Japanese Patent JP3080338
Kind Code:
B2
Inventors:
宮崎 衛
Application Number:
JP16317492A
Publication Date:
August 28, 2000
Filing Date:
June 22, 1992
Export Citation:
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Assignee:
株式会社コプロス
International Classes:
E02D7/00; E02D7/20; E02F3/47; E21B7/20; E21B7/24; E21D1/04; (IPC1-7): E21B7/20; E02D7/20
Attorney, Agent or Firm:
小堀 益



 
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