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发明名称
Improvements in beat frequency oscillators
摘要
申请公布号
GB619288(A)
申请公布日期
1949.03.07
申请号
GB19460035537
申请日期
1946.11.30
申请人
STANDARD TELEPHONES AND CABLES LIMITED;HARRY GRAYSON
发明人
分类号
H03B23/00
主分类号
H03B23/00
代理机构
代理人
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地址
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