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发明名称
CORE OF BASEBALL
摘要
The core of exercise baseball using polyethylene foam was manufd. by foaming the polyethylene resin (I) with 1/400 parts foaming agent (cellcom A.C.) on the basis of I and foaming aids at 120-160≦̸C for 50-60 sec. in mold.
申请公布号
KR800000120(B1)
申请公布日期
1980.03.07
申请号
KR19790004673
申请日期
1979.12.27
申请人
KIM MOO UI
发明人
KIM MOO UI
分类号
A63B37/02;(IPC1-7):A63B37/02
主分类号
A63B37/02
代理机构
代理人
主权项
地址
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