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发明名称
Luminous dial
摘要
申请公布号
US2194627(A)
申请公布日期
1940.03.26
申请号
US19390277421
申请日期
1939.06.05
申请人
BERTRAND WILLIAMS GEORGE
发明人
WILLIAMS GEORGE BERTRAND
分类号
F21V9/16;G04B19/32
主分类号
F21V9/16
代理机构
代理人
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地址
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