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发明名称
Dithering device
摘要
申请公布号
US2498034(A)
申请公布日期
1950.02.21
申请号
US19460639458
申请日期
1946.01.05
申请人
JOHN ERWOOD
发明人
ERWOOD JOHN
分类号
B06B3/00;G05D3/12
主分类号
B06B3/00
代理机构
代理人
主权项
地址
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