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经营范围
发明名称
Mine lamp
摘要
申请公布号
US1918223(A)
申请公布日期
1933.07.11
申请号
US19310531156
申请日期
1931.04.18
申请人
KOEHLER MANUFACTURING COMPANY
发明人
WHEAT GRANT
分类号
F21V25/00
主分类号
F21V25/00
代理机构
代理人
主权项
地址
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