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发明名称
Signal
摘要
申请公布号
US1783855(A)
申请公布日期
1930.12.02
申请号
US19280327650
申请日期
1928.12.21
申请人
RADCLIFFE FRANK P
发明人
RADCLIFFE FRANK P.
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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