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发明名称
Proximity indicator
摘要
申请公布号
US2886796(A)
申请公布日期
1959.05.12
申请号
US19560605539
申请日期
1956.08.22
申请人
PANORAMIC RADIO PRODUCTS, INC.
发明人
WALLACE MARCEL
分类号
G08G5/00
主分类号
G08G5/00
代理机构
代理人
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地址
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