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发明名称
IMPELLER PUMP SEAL AND WEAR RING
摘要
申请公布号
CA577647(A)
申请公布日期
1959.06.16
申请号
CAD577647
申请日期
申请人
ROBERT D. COPELAND
发明人
ROBERT D. COPELAND
分类号
主分类号
代理机构
代理人
主权项
地址
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