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发明名称
Template and punch therefor
摘要
申请公布号
US2077232(A)
申请公布日期
1937.04.13
申请号
US19340749492
申请日期
1934.10.22
申请人
GRAHEK SR JOHN
发明人
SR. JOHN GRAHEK,
分类号
B21D53/20
主分类号
B21D53/20
代理机构
代理人
主权项
地址
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