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发明名称
Improvements in film propelling mechanisms
摘要
申请公布号
GB629011(A)
申请公布日期
1949.09.08
申请号
GB19470007152
申请日期
1947.03.14
申请人
WESTERN ELECTRIC COMPANY INCORPORATED
发明人
分类号
G03B19/18
主分类号
G03B19/18
代理机构
代理人
主权项
地址
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