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发明名称
Signal for rural mail boxes
摘要
申请公布号
US2428423(A)
申请公布日期
1947.10.07
申请号
US19460665267
申请日期
1946.04.26
申请人
HURBAN WENDELL J
发明人
HURBAN WENDELL J.
分类号
A47G29/122
主分类号
A47G29/122
代理机构
代理人
主权项
地址
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