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发明名称
SWAB MANDREL
摘要
申请公布号
US3542408(A)
申请公布日期
1970.11.24
申请号
USD3542408
申请日期
1968.09.13
申请人
GEORGE LOWREY;MISSION MFG. CO.
发明人
GEORGE LOWREY
分类号
E21B37/10;(IPC1-7):F04B21/04;F01B1/10
主分类号
E21B37/10
代理机构
代理人
主权项
地址
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