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发明名称
Rectangular packing for wire line oil savers
摘要
申请公布号
US2960357(A)
申请公布日期
1960.11.15
申请号
US19570668497
申请日期
1957.06.27
申请人
DOMER SCARAMUCCI
发明人
SCARAMUCCI DOMER
分类号
E21B33/08
主分类号
E21B33/08
代理机构
代理人
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地址
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