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发明名称
Signaling apparatus
摘要
申请公布号
US2401943(A)
申请公布日期
1946.06.11
申请号
US19420463860
申请日期
1942.10.30
申请人
RADIO CORPORATION
发明人
LEIGH JOHN S.;JR. ALEXANDER MURDOCH,
分类号
B06B1/08
主分类号
B06B1/08
代理机构
代理人
主权项
地址
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