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发明名称
REVERSE CIRCULATION TOOL
摘要
申请公布号
CA520964(A)
申请公布日期
1956.01.24
申请号
CAD520964
申请日期
申请人
THOMAS G. EASTLAND
发明人
THOMAS G. EASTLAND
分类号
主分类号
代理机构
代理人
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地址
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