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发明名称
Synchronizing apparatus
摘要
申请公布号
US2247809(A)
申请公布日期
1941.07.01
申请号
US19390265441
申请日期
1939.04.01
申请人
ABBEY PHOTO CORPORATION
发明人
HARTMAN LEON;PRAGER GUSTAV
分类号
G03B9/70
主分类号
G03B9/70
代理机构
代理人
主权项
地址
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