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经营范围
发明名称
Improvements in or relating to vibration translating devices
摘要
申请公布号
GB446153(A)
申请公布日期
1936.04.24
申请号
GB19350026541
申请日期
1935.09.25
申请人
ELECTRICAL RESEARCH PRODUCTS INC.
发明人
分类号
H04R9/12
主分类号
H04R9/12
代理机构
代理人
主权项
地址
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