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经营范围
发明名称
TRANSDUCER DRIVE ROD
摘要
申请公布号
US3454912(A)
申请公布日期
1969.07.08
申请号
USD3454912
申请日期
1967.04.28
申请人
ROANWELL CORP.
发明人
LOUIS A. MORRISON
分类号
H04R11/00;(IPC1-7):H01F7/08
主分类号
H04R11/00
代理机构
代理人
主权项
地址
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