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发明名称
Method of making square-head screws
摘要
申请公布号
US2024593(A)
申请公布日期
1935.12.17
申请号
US19340724367
申请日期
1934.05.07
申请人
HARRINGTON MOORE
发明人
MOORE HARRINGTON
分类号
B21K1/44
主分类号
B21K1/44
代理机构
代理人
主权项
地址
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