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发明名称
Improvements in x-ray diaphragms for intercepting secondary radiation and method of making same
摘要
申请公布号
GB505919(A)
申请公布日期
1939.05.19
申请号
GB19370032698
申请日期
1937.11.26
申请人
NILS GEORG SCHOENANDER;SVEN HARALD LEDIN
发明人
分类号
G21K1/02
主分类号
G21K1/02
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代理人
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地址
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