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经营范围
发明名称
Umschalteinrichtung zur wahlweisen Führung der Gespräche mit dem Mikrotelephon des Sprechstellen-Apparates oder mit einem Lautsprechertelephon.
摘要
申请公布号
CH192713(A)
申请公布日期
1937.08.31
申请号
CHD192713
申请日期
1936.11.05
申请人
AUTOPHON AKTIENGESELLSCHAFT
发明人
AKTIENGESELLSCHAFT AUTOPHON
分类号
H04M1/62
主分类号
H04M1/62
代理机构
代理人
主权项
地址
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