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发明名称
Abhörkopf für Stethoskope, insbesondere zur Erzielung einer räumlichen Hörwirkung
摘要
申请公布号
AT200716(B)
申请公布日期
1958.11.25
申请号
ATD200716
申请日期
1956.09.01
申请人
DR. LUDWIG PREISSL
发明人
DR. LUDWIG PREISSL
分类号
主分类号
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