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经营范围
发明名称
Automatischer Datumanzeiger
摘要
申请公布号
DE874580(C)
申请公布日期
1953.04.23
申请号
DE1950H002432
申请日期
1950.04.20
申请人
HETZEL FRANZ
发明人
HETZEL FRANZ
分类号
G04B19/253
主分类号
G04B19/253
代理机构
代理人
主权项
地址
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