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发明名称
Bell ringing device for locomotives
摘要
申请公布号
US1980260(A)
申请公布日期
1934.11.13
申请号
US19340729860
申请日期
1934.06.09
申请人
FAULKNER LOUIS E
发明人
FAULKNER LOUIS E.
分类号
G10K1/068
主分类号
G10K1/068
代理机构
代理人
主权项
地址
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