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发明名称
Electromechanical transducers
摘要
申请公布号
US3219850(A)
申请公布日期
1965.11.23
申请号
US19570684096
申请日期
1957.09.16
申请人
CLEVITE CORPORATION
发明人
LANGEVIN ROBERT A.
分类号
G01C19/56;H04R17/00;H04R17/08
主分类号
G01C19/56
代理机构
代理人
主权项
地址
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