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经营范围
发明名称
An improved ballast weight
摘要
申请公布号
GB861121(A)
申请公布日期
1961.02.15
申请号
GB19560035350
申请日期
1956.11.19
申请人
DAVID JOHNSTON WYLLIE
发明人
分类号
B64B1/58
主分类号
B64B1/58
代理机构
代理人
主权项
地址
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