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发明名称
Lubricating means
摘要
申请公布号
US1748817(A)
申请公布日期
1930.02.25
申请号
US19290396352
申请日期
1929.09.30
申请人
ZERK OSCAR U
发明人
ZERK OSCAR U.
分类号
F16N21/04
主分类号
F16N21/04
代理机构
代理人
主权项
地址
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