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发明名称
Automatically recording pitch matching equipment
摘要
申请公布号
US2869666(A)
申请公布日期
1959.01.20
申请号
US19540435654
申请日期
1954.06.09
申请人
WEBSTER JOHN C
发明人
WEBSTER JOHN C.
分类号
主分类号
代理机构
代理人
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地址
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