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发明名称
Retarding mechanism for photographic shutters
摘要
申请公布号
US2081727(A)
申请公布日期
1937.05.25
申请号
US19350050756
申请日期
1935.11.20
申请人
VOIGTLANDER & SOHN AKTIENGESELLSCHAFT
发明人
BARENYI ARPED
分类号
G03B9/58
主分类号
G03B9/58
代理机构
代理人
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