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发明名称
Einrichtung zum Vergleich periodischer Vorgänge
摘要
申请公布号
AT172895(B)
申请公布日期
1952.10.25
申请号
ATD172895
申请日期
1951.01.04
申请人
SIEMENS & HALSKE GESELLSCHAFT M. B. H.
发明人
DR. WILHELM ROHRER
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