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发明名称
Apparatus for forming the head on a flat head screw
摘要
申请公布号
US3304561(A)
申请公布日期
1967.02.21
申请号
US19640397449
申请日期
1964.09.18
申请人
AMERICAN FASTENER CORPORATION
发明人
ELLSWORTH ROBERT C.
分类号
B21K1/46
主分类号
B21K1/46
代理机构
代理人
主权项
地址
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