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经营范围
发明名称
Calling dials
摘要
申请公布号
GB609478(A)
申请公布日期
1948.10.01
申请号
GB19440014362
申请日期
1944.07.27
申请人
AUTOPHON AKTIENGESELLSCHAFT
发明人
分类号
H04M1/31
主分类号
H04M1/31
代理机构
代理人
主权项
地址
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