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发明名称
Improved method and apparatus for covering balls
摘要
申请公布号
GB642469(A)
申请公布日期
1950.09.06
申请号
GB19470006246
申请日期
1947.03.05
申请人
FRED THOMAS ROBERTS
发明人
分类号
B29C63/00;B29D22/04
主分类号
B29C63/00
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代理人
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