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发明名称
Tray follower
摘要
申请公布号
US2198004(A)
申请公布日期
1940.04.23
申请号
US19380229102
申请日期
1938.09.09
申请人
ELLIOTT HARMON P
发明人
ELLIOTT HARMON P.
分类号
B42F17/02
主分类号
B42F17/02
代理机构
代理人
主权项
地址
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