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发明名称
Exhibiting apparatus
摘要
申请公布号
US1900557(A)
申请公布日期
1933.03.07
申请号
US19290397761
申请日期
1929.10.07
申请人
HOLCOMBE GEORGE A
发明人
HOLCOMBE GEORGE A.
分类号
G02B27/02
主分类号
G02B27/02
代理机构
代理人
主权项
地址
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