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发明名称
SWIMMING POOL COVER
摘要
申请公布号
PT79494(B)
申请公布日期
1986.07.22
申请号
PT19840079494
申请日期
1984.11.14
申请人
FRED HESS
发明人
分类号
E04H4/10;(IPC1-7):E04H3/19
主分类号
E04H4/10
代理机构
代理人
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地址
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