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发明名称
Electronic device
摘要
申请公布号
US2589720(A)
申请公布日期
1952.03.18
申请号
US19500190834
申请日期
1950.10.18
申请人
GRAFLEX, INC.
发明人
MCMATH MARL
分类号
B01D35/147;F21K5/12
主分类号
B01D35/147
代理机构
代理人
主权项
地址
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