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发明名称
Improvements in or relating to telephone sets
摘要
申请公布号
GB333948(A)
申请公布日期
1930.08.25
申请号
GB19290016200
申请日期
1929.05.25
申请人
HELENE REUCKE;ANNA PRE?SCH
发明人
分类号
H04M1/02
主分类号
H04M1/02
代理机构
代理人
主权项
地址
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