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发明名称
Battery hand lamp
摘要
申请公布号
US1788575(A)
申请公布日期
1931.01.13
申请号
US19280287478
申请日期
1928.06.22
申请人
NATIONAL CARBON COMPANY, INC.
发明人
JONES HOMER WALTER;GRAUBNER HERMAN G.
分类号
F21L4/00
主分类号
F21L4/00
代理机构
代理人
主权项
地址
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