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发明名称
FILM FOOTAGE INDICATOR
摘要
申请公布号
US3620610(A)
申请公布日期
1971.11.16
申请号
USD3620610
申请日期
1969.12.30
申请人
BELL & HOWELL CO.
发明人
RICHARD K. CARLSON
分类号
G03B21/43;(IPC1-7):G03B1/60
主分类号
G03B21/43
代理机构
代理人
主权项
地址
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