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经营范围
发明名称
Film guiding and exposure arrangement
摘要
申请公布号
US2712770(A)
申请公布日期
1955.07.12
申请号
US19510248254
申请日期
1951.09.25
申请人
BOLSEY
发明人
BOLSEY JACQUES;NICOLOSI ROBERT V.
分类号
G03B1/48
主分类号
G03B1/48
代理机构
代理人
主权项
地址
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