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发明名称
Rotary stop device for screening off secondary x-rays
摘要
申请公布号
US1780085(A)
申请公布日期
1930.10.28
申请号
US19270188357
申请日期
1927.05.02
申请人
FRIEDRICH LEISER
发明人
LEISER FRIEDRICH
分类号
G21K1/02
主分类号
G21K1/02
代理机构
代理人
主权项
地址
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