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经营范围
发明名称
Apparatus for inducing sleep
摘要
申请公布号
GB652860(A)
申请公布日期
1951.05.02
申请号
GB19460023522
申请日期
1946.08.08
申请人
ALLEN TRASK
发明人
分类号
F21V23/00;F21V23/02
主分类号
F21V23/00
代理机构
代理人
主权项
地址
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