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发明名称
Automatic clarifying sight feeder
摘要
申请公布号
US2173640(A)
申请公布日期
1939.09.19
申请号
US19370141878
申请日期
1937.05.10
申请人
WEST LEWIS V
发明人
WEST LEWIS V.
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主分类号
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代理人
主权项
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