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经营范围
发明名称
Projection picture feeding mechanism
摘要
申请公布号
US2412246(A)
申请公布日期
1946.12.10
申请号
US19450607551
申请日期
1945.07.28
申请人
BLUMENSTEIN MAX E
发明人
BLUMENSTEIN MAX E.
分类号
G03B23/04
主分类号
G03B23/04
代理机构
代理人
主权项
地址
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