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发明名称
Exposure register
摘要
申请公布号
US2278342(A)
申请公布日期
1942.03.31
申请号
US19400338678
申请日期
1940.06.04
申请人
ZIEGLER LOUIS M
发明人
ZIEGLER LOUIS M.
分类号
G03B9/58;G03B17/42
主分类号
G03B9/58
代理机构
代理人
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