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发明名称
Recording thread brush
摘要
申请公布号
US2266875(A)
申请公布日期
1941.12.23
申请号
US19400329878
申请日期
1940.04.16
申请人
AUDIO DEVICES, INC.
发明人
BEL CLARENCE J. LE
分类号
B23Q11/00
主分类号
B23Q11/00
代理机构
代理人
主权项
地址
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