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经营范围
发明名称
Facing heads
摘要
申请公布号
US2901935(A)
申请公布日期
1959.09.01
申请号
US19570658363
申请日期
1957.05.10
申请人
J. & A. KELLER MACHINE COMPANY, INC.
发明人
JR. ARTHUR P. KELLER,;SIMON IRVIN C.
分类号
B23B29/034;B23Q11/00
主分类号
B23B29/034
代理机构
代理人
主权项
地址
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