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发明名称
PIEZOELECTRIC TRANSDUCER ELEMENT
摘要
申请公布号
US3546497(A)
申请公布日期
1970.12.08
申请号
USD3546497
申请日期
1968.11.04
申请人
PLESSEY CO. LTD.:THE
发明人
WILLIAM CRASTER
分类号
B06B1/06
主分类号
B06B1/06
代理机构
代理人
主权项
地址
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