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经营范围
发明名称
Improvements in, or relating to, gap rolls for use in rolling metal
摘要
申请公布号
GB325596(A)
申请公布日期
1930.02.24
申请号
GB19280034635
申请日期
1928.11.24
申请人
DANIEL SMITH
发明人
分类号
B21H1/22
主分类号
B21H1/22
代理机构
代理人
主权项
地址
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