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发明名称
Chuck
摘要
申请公布号
US2471407(A)
申请公布日期
1949.05.31
申请号
US19450588758
申请日期
1945.04.17
申请人
FEDERAL TELEPHONE AND RADIO CORPORATION
发明人
BUDIG JOSEF
分类号
B23B31/10;B23B31/22;C03B23/045
主分类号
B23B31/10
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