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发明名称
Hollow balls
摘要
申请公布号
GB2054389(A)
申请公布日期
1981.02.18
申请号
GB19790026811
申请日期
1979.08.01
申请人
MURPHY C W
发明人
分类号
A63B39/00;F21V1/14;G09B27/08;(IPC1-7):A63B39/00;F21V1/06;F21V1/12
主分类号
A63B39/00
代理机构
代理人
主权项
地址
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