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发明名称
Fluid pressure advertising display device
摘要
申请公布号
US1975469(A)
申请公布日期
1934.10.02
申请号
US19310517865
申请日期
1931.02.24
申请人
MAC AD COMPANY
发明人
MACLACHLAN JOHN D.
分类号
G09F11/02
主分类号
G09F11/02
代理机构
代理人
主权项
地址
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