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发明名称
Radio tuner for hearing aid apparatus
摘要
申请公布号
US2549259(A)
申请公布日期
1951.04.17
申请号
US19480001568
申请日期
1948.01.10
申请人
DICTOGRAPH PRODUCTS COMPANY, INC.
发明人
STROMMEN EINAR A.
分类号
H04B1/08
主分类号
H04B1/08
代理机构
代理人
主权项
地址
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