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发明名称
Combination siren whistle
摘要
申请公布号
US1867903(A)
申请公布日期
1932.07.19
申请号
US19310511177
申请日期
1931.01.26
申请人
FRANK WILCOX
发明人
WILCOX FRANK
分类号
G10K5/00;G10K7/06
主分类号
G10K5/00
代理机构
代理人
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地址
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