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发明名称
Fernsprechanlage mit Zentralbatterie.
摘要
申请公布号
CH197441(A)
申请公布日期
1938.04.30
申请号
CHD197441
申请日期
1936.10.02
申请人
BELL TELEPHONE MANUFACTURING COMPANY, SOCIETE ANONYME
发明人
BELL TELEPHONE MANUFACTURING COMPANY, SOCIETE ANONYME
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