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发明名称
Variable tuning mechanism
摘要
申请公布号
US2330047(A)
申请公布日期
1943.09.21
申请号
US19400342156
申请日期
1940.06.24
申请人
SPRAGUE SPECIALTIES CO.
发明人
JR. FRANK W. GODSEY,
分类号
主分类号
代理机构
代理人
主权项
地址
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