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经营范围
发明名称
Improvements in pistons and in processes for their manufacture
摘要
申请公布号
GB440341(A)
申请公布日期
1935.12.20
申请号
GB19340018269
申请日期
1934.06.20
申请人
RAYMOND DE FLEURY
发明人
分类号
B22C9/24
主分类号
B22C9/24
代理机构
代理人
主权项
地址
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