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经营范围
发明名称
Variomètre à diélectrique-air
摘要
申请公布号
FR884173(A)
申请公布日期
1943.08.04
申请号
FRD884173
申请日期
1942.07.13
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H01F21/00
主分类号
H01F21/00
代理机构
代理人
主权项
地址
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