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发明名称
Electric street lighting bulb
摘要
申请公布号
US1977614(A)
申请公布日期
1934.10.23
申请号
US19310548953
申请日期
1931.07.06
申请人
WELSBACH STREET LIGHTING COMPANY OF AMERICA
发明人
BECK MORRIS B.;WHITTAKER JOHN D.
分类号
H01K1/32
主分类号
H01K1/32
代理机构
代理人
主权项
地址
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