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发明名称
Reel for motion-picture film
摘要
申请公布号
US2670202(A)
申请公布日期
1954.02.23
申请号
US19500197342
申请日期
1950.11.24
申请人
GREGG WARD M
发明人
GREGG WARD M.
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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