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发明名称
Vibratory reed device and system employing the same
摘要
申请公布号
US2831937(A)
申请公布日期
1958.04.22
申请号
US19540410857
申请日期
1954.02.17
申请人
JAMES G. BIDDLE CO.
发明人
FOSTER WILLIAM P.;RICHARDSON CHARLES A.
分类号
H01H51/32
主分类号
H01H51/32
代理机构
代理人
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