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发明名称
FLUID SEALS
摘要
申请公布号
CA478744(A)
申请公布日期
1951.11.20
申请号
CAD478744
申请日期
申请人
NATIONAL MOTOR BEARING CO.
发明人
FRED A. HELFRECHT
分类号
主分类号
代理机构
代理人
主权项
地址
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