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发明名称
Film reel
摘要
申请公布号
US2065575(A)
申请公布日期
1936.12.29
申请号
US19350022359
申请日期
1935.05.20
申请人
GAVIN RICHARD S
发明人
GAVIN RICHARD S.
分类号
G03B21/32
主分类号
G03B21/32
代理机构
代理人
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