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发明名称
Spanabhebender Stift mit dreikantiger Pyramidenspitze zum Aufzeichnen von Schallkurven
摘要
申请公布号
DE599964(C)
申请公布日期
1934.07.12
申请号
DE1932H130460D
申请日期
1932.02.04
申请人
ERICH HAAKE
发明人
分类号
G11B3/48
主分类号
G11B3/48
代理机构
代理人
主权项
地址
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