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发明名称
Film measuring device
摘要
申请公布号
US1974758(A)
申请公布日期
1934.09.25
申请号
US19300429916
申请日期
1930.02.20
申请人
WARNER BROS. PICTURES, INC.
发明人
SPRAY JOSEPH H.
分类号
G03B21/43
主分类号
G03B21/43
代理机构
代理人
主权项
地址
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