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发明名称
Moistureproof housing for piezoelectrtic elements
摘要
申请公布号
US2454244(A)
申请公布日期
1948.11.16
申请号
US19450578750
申请日期
1945.02.19
申请人
WINTERMUTE CARLTON H
发明人
WINTERMUTE CARLTON H.
分类号
H03H9/09;H03H9/10
主分类号
H03H9/09
代理机构
代理人
主权项
地址
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