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经营范围
发明名称
Droppable marker light
摘要
申请公布号
US2703417(A)
申请公布日期
1955.03.08
申请号
US19530387811
申请日期
1953.10.22
申请人
JOHNSON FRANCIS M
发明人
JOHNSON FRANCIS M.
分类号
B64F1/20
主分类号
B64F1/20
代理机构
代理人
主权项
地址
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