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发明名称
Lautsprecher mit einem schraubenfoermig gewundenen Schalleitungskanal
摘要
申请公布号
DE544671(C)
申请公布日期
1932.02.25
申请号
DE1927T034330D
申请日期
1927.12.04
申请人
TEMPLE, INC.
发明人
分类号
G10K11/02
主分类号
G10K11/02
代理机构
代理人
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