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发明名称
Flue roller
摘要
申请公布号
US2470005(A)
申请公布日期
1949.05.10
申请号
US19480002593
申请日期
1948.01.16
申请人
VILTER ERNEST F
发明人
VILTER ERNEST F.
分类号
B21D39/18
主分类号
B21D39/18
代理机构
代理人
主权项
地址
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