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Hot top
摘要
申请公布号
US1794840(A)
申请公布日期
1931.03.03
申请号
US19280315303
申请日期
1928.10.26
申请人
INSULATED TOP COMPANY
发明人
EGLER NIKLAS F.
分类号
B22D7/10
主分类号
B22D7/10
代理机构
代理人
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