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发明名称
Improvements in miners' and like safety lamps
摘要
申请公布号
GB447406(A)
申请公布日期
1936.05.13
申请号
GB19340032616
申请日期
1934.11.13
申请人
ERNEST ARTHUR HAILWOOD
发明人
分类号
F21L23/00
主分类号
F21L23/00
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代理人
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