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发明名称
Apparatus for transforming mechanical vibrations into electrical fluctuations
摘要
申请公布号
US1776009(A)
申请公布日期
1930.09.16
申请号
US19250055202
申请日期
1925.09.08
申请人
FRANK RIEBER
发明人
RIEBER FRANK
分类号
H04R17/02
主分类号
H04R17/02
代理机构
代理人
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地址
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