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发明名称
Trigonometric angle generator
摘要
申请公布号
US2173519(A)
申请公布日期
1939.09.19
申请号
US19360108746
申请日期
1936.11.02
申请人
DAVID JONES
发明人
JONES DAVID
分类号
主分类号
代理机构
代理人
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