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发明名称
Telephon-Hand-Apparat
摘要
申请公布号
DE846867(C)
申请公布日期
1952.08.18
申请号
DE1949P003515D
申请日期
1949.07.15
申请人
ERICH KOLLWECK, BERLIN
发明人
BERLIN ERICH KOLLWECK,
分类号
H04M1/05
主分类号
H04M1/05
代理机构
代理人
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