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发明名称
Film reel
摘要
申请公布号
US2703684(A)
申请公布日期
1955.03.08
申请号
US19510226013
申请日期
1951.05.12
申请人
WARFIELD CHARLIE W
发明人
WARFIELD CHARLIE W.
分类号
G03B21/32
主分类号
G03B21/32
代理机构
代理人
主权项
地址
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