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发明名称
Apparatus for projecting aerial signs
摘要
申请公布号
US2165246(A)
申请公布日期
1939.07.11
申请号
US19360110751
申请日期
1936.11.13
申请人
EDWARDS GORDON C
发明人
EDWARDS GORDON C.
分类号
G09F19/18
主分类号
G09F19/18
代理机构
代理人
主权项
地址
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