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经营范围
发明名称
Lubricating means
摘要
申请公布号
US2280910(A)
申请公布日期
1942.04.28
申请号
US19390301873
申请日期
1939.10.30
申请人
A. Y. MCDONALD MFG. CO.
发明人
HAZARD WILLIAM HORACE
分类号
F04B53/00
主分类号
F04B53/00
代理机构
代理人
主权项
地址
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