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发明名称
Bulk cement conveyance
摘要
申请公布号
US2412121(A)
申请公布日期
1946.12.03
申请号
US19450607791
申请日期
1945.07.30
申请人
HALLIBURTON OIL WELL CEMENTING COMPANY
发明人
BRADSHAW JOHN R.
分类号
B60P1/40
主分类号
B60P1/40
代理机构
代理人
主权项
地址
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