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经营范围
发明名称
Automatic railroad whistle
摘要
申请公布号
US2692311(A)
申请公布日期
1954.10.19
申请号
US19510207575
申请日期
1951.01.24
申请人
LEE ELLIOTT
发明人
ELLIOTT LEE
分类号
B61L29/26
主分类号
B61L29/26
代理机构
代理人
主权项
地址
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