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发明名称
Lubricating device
摘要
申请公布号
US2020537(A)
申请公布日期
1935.11.12
申请号
US19310548786
申请日期
1931.07.06
申请人
DANNEMANN FREDERICK C
发明人
DANNEMANN FREDERICK C.
分类号
F16N9/04
主分类号
F16N9/04
代理机构
代理人
主权项
地址
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