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专利详情
Elektrische Entladungslampe.
申请公布号:
CH180800(A)
申请号:
CHD180800
申请日期:
1934.04.03
申请公布日期:
1935.11.15
申请人:
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人:
GLOEILAMPENFABRIEKEN N. V. PHILIPS'
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