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经营范围
发明名称
Grease pump
摘要
申请公布号
US2235544(A)
申请公布日期
1941.03.18
申请号
US19380214805
申请日期
1938.06.20
申请人
DONALD E. WOOLARD
发明人
WOLD FRANK E.
分类号
F16N13/16
主分类号
F16N13/16
代理机构
代理人
主权项
地址
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