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发明名称
Signaling device
摘要
申请公布号
US1768884(A)
申请公布日期
1930.07.01
申请号
US19300429173
申请日期
1930.02.17
申请人
BURGGRAF RHODA B
发明人
BURGGRAF RHODA B.
分类号
B60Q1/34
主分类号
B60Q1/34
代理机构
代理人
主权项
地址
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