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经营范围
发明名称
Shock resistant transducer
摘要
申请公布号
US3347991(A)
申请公布日期
1967.10.17
申请号
US19640352462
申请日期
1964.03.17
申请人
INDUSTRIAL RESEARCH PRODUCTS, INC.
发明人
CARLSON ELMER V.
分类号
H04R11/00;H04R31/00
主分类号
H04R11/00
代理机构
代理人
主权项
地址
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