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发明名称
Film driving mechanism
摘要
申请公布号
US2217183(A)
申请公布日期
1940.10.08
申请号
US19380200648
申请日期
1938.04.07
申请人
RADIO CORPORATION OF AMERICA
发明人
ROSS ERNEST
分类号
G03B27/475
主分类号
G03B27/475
代理机构
代理人
主权项
地址
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