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发明名称
Lubrication indicator
摘要
申请公布号
US2245278(A)
申请公布日期
1941.06.10
申请号
US19380225793
申请日期
1938.08.19
申请人
JELLISON ERNEST E
发明人
JELLISON ERNEST E.
分类号
G07C7/00
主分类号
G07C7/00
代理机构
代理人
主权项
地址
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