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经营范围
发明名称
Radioactive film
摘要
申请公布号
US2266738(A)
申请公布日期
1941.12.23
申请号
US19400327078
申请日期
1940.03.30
申请人
UNITED STATES RADIUM CORPORATION
发明人
BYLER WILLIAM H.;WALLHAUSEN CLARENCE W.
分类号
G21G4/06
主分类号
G21G4/06
代理机构
代理人
主权项
地址
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