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发明名称
Bedienungsrufer.
摘要
申请公布号
CH180830(A)
申请公布日期
1935.11.15
申请号
CHD180830
申请日期
1934.11.09
申请人
BRUCH,GUSTAV
发明人
BRUCH,GUSTAV
分类号
G08B5/02;G09F23/06
主分类号
G08B5/02
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