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发明名称
Combination clock and barber's pole
摘要
申请公布号
US1875049(A)
申请公布日期
1932.08.30
申请号
US19320585305
申请日期
1932.01.07
申请人
LEWIS HEZEKIAH J
发明人
LEWIS HEZEKIAH J.
分类号
G09F23/16
主分类号
G09F23/16
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代理人
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