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发明名称
Hausfernsprechanlage.
摘要
申请公布号
AT132276(B)
申请公布日期
1933.03.10
申请号
ATD132276
申请日期
1931.07.22
申请人
HEINRICH HERR
发明人
HEINRICH HERR
分类号
主分类号
代理机构
代理人
主权项
地址
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