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发明名称
METHODS OF SLOTTING SCREW FASTENERS AND FASTENERS MADE THEREBY
摘要
申请公布号
CA478765(A)
申请公布日期
1951.11.20
申请号
CAD478765
申请日期
申请人
RESEARCH ENGINEERING AND MANUFACTURING
发明人
FRANK KINNEY BROWN
分类号
主分类号
代理机构
代理人
主权项
地址
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