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发明名称
Tastatur fuer Handharmoniken
摘要
申请公布号
DE749198(C)
申请公布日期
1944.11.17
申请号
DE1941L105000D
申请日期
1941.07.30
申请人
DR. PHIL. HANS LUEDTKE
发明人
LUEDTKE DR. PHIL. HANS
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主分类号
代理机构
代理人
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