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发明名称
Opaque materials for x-ray and radium work or the like
摘要
申请公布号
US2183790(A)
申请公布日期
1939.12.19
申请号
US19350012272
申请日期
1935.03.21
申请人
THE RICHARDSON COMPANY
发明人
DILLEHAY EDWARD R.;ELLYN GLEN;MCFEDRIES GEORGE M.
分类号
G21F1/12
主分类号
G21F1/12
代理机构
代理人
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地址
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