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发明名称
Telephonograph.
摘要
申请公布号
CH242957(A)
申请公布日期
1946.06.15
申请号
CHD242957
申请日期
1943.01.23
申请人
IPSOPHON PATENTGESELLSCHAFT AG.
发明人
AG. IPSOPHON PATENTGESELLSCHAFT
分类号
H04M1/65;H04M1/652
主分类号
H04M1/65
代理机构
代理人
主权项
地址
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