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发明名称
Method of making an expandable fastener
摘要
申请公布号
US2843928(A)
申请公布日期
1958.07.22
申请号
US19540465071
申请日期
1954.10.27
申请人
TOWNSEND COMPANY
发明人
GANDY JOHN E.
分类号
B21K1/58
主分类号
B21K1/58
代理机构
代理人
主权项
地址
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