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经营范围
发明名称
Gegentaktphotometer
摘要
申请公布号
DE718434(C)
申请公布日期
1942.03.12
申请号
DE1939S139491D
申请日期
1939.12.08
申请人
SIEMENS & HALSKE AG.
发明人
KOLLER DR.-ING. AUGUST
分类号
G01N21/25
主分类号
G01N21/25
代理机构
代理人
主权项
地址
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