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经营范围
发明名称
Kamera in Taschenuhrform
摘要
申请公布号
DE597096(C)
申请公布日期
1934.05.16
申请号
DENDATB157053D
申请日期
申请人
HANS BECKMANN JR.
发明人
分类号
G03B29/00
主分类号
G03B29/00
代理机构
代理人
主权项
地址
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