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发明名称
Method of diamond drilling
摘要
申请公布号
GB580411(A)
申请公布日期
1946.09.06
申请号
GB19430017655
申请日期
1943.10.26
申请人
CALLITE TUNGSTEN CORPORATION
发明人
分类号
C04B41/53
主分类号
C04B41/53
代理机构
代理人
主权项
地址
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