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发明名称
APPARATUS FOR HANDLING DRILLING FLUID IN CONNECTION WITH A DERRICK
摘要
申请公布号
CA546554(A)
申请公布日期
1957.09.24
申请号
CAD546554
申请日期
申请人
CHIKSAN COMPANY
发明人
PETER J. BILY
分类号
主分类号
代理机构
代理人
主权项
地址
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