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发明名称
Indicating system
摘要
申请公布号
US2374408(A)
申请公布日期
1945.04.24
申请号
US19430491788
申请日期
1943.06.22
申请人
NELSON BRAIDWOOD EMILY
发明人
BRAIDWOOD EMILY NELSON
分类号
G08B5/22
主分类号
G08B5/22
代理机构
代理人
主权项
地址
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