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发明名称
Photographic timer and method of timing photographic treating processes
摘要
申请公布号
US3349685(A)
申请公布日期
1967.10.31
申请号
US19630302902
申请日期
1963.08.19
申请人
BUECHNER WERNER W
发明人
BUECHNER WERNER W.
分类号
G03D13/00;H01H43/12
主分类号
G03D13/00
代理机构
代理人
主权项
地址
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