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发明名称
Verfahren zur Herstellung der kegeligen Membranen fuer Lautsprecher
摘要
申请公布号
DE536720(C)
申请公布日期
1931.10.26
申请号
DE1927J030844D
申请日期
1927.04.05
申请人
JAROSLAW'S ERSTE GLIMMERWARENFABRIK
发明人
分类号
H04R7/02
主分类号
H04R7/02
代理机构
代理人
主权项
地址
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