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经营范围
发明名称
Metal film attenuator
摘要
申请公布号
US2529436(A)
申请公布日期
1950.11.07
申请号
US19440540347
申请日期
1944.06.14
申请人
POLYTECHNIC INSTITUTE OF BROOKLYN
发明人
WEBER ERNST;GRIEMSMANN JOHN W. E.
分类号
H01P1/22
主分类号
H01P1/22
代理机构
代理人
主权项
地址
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