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发明名称
Improvements in files
摘要
申请公布号
GB577391(A)
申请公布日期
1946.05.16
申请号
GB19440007187
申请日期
1944.04.18
申请人
HUGH JOSEPH LORANT
发明人
分类号
B23D71/00
主分类号
B23D71/00
代理机构
代理人
主权项
地址
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