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发明名称
Motion picture projecting apparatus
摘要
申请公布号
US1985629(A)
申请公布日期
1934.12.25
申请号
US19310515486
申请日期
1931.02.13
申请人
CRABTREE IVORY H
发明人
CRABTREE IVORY H.
分类号
G03B21/16
主分类号
G03B21/16
代理机构
代理人
主权项
地址
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