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发明名称
Frequency-setting fork
摘要
申请公布号
US1792630(A)
申请公布日期
1931.02.17
申请号
US19280310308
申请日期
1928.10.04
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
CURTIS AUSTEN M.
分类号
H03B5/30
主分类号
H03B5/30
代理机构
代理人
主权项
地址
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