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发明名称
MEJORAS INTRODUCIDAS EN LA CONSTRUCCIËN DE PISTAS PARA ESQUIAR
摘要
申请公布号
ES268303(A1)
申请公布日期
1962.10.16
申请号
ES19030002683
申请日期
1962.06.16
申请人
HALL, RAYMOND L.
发明人
分类号
A63B69/18;A63C19/10;E01C13/12;E04H3/14;(IPC1-7):A63B69/18
主分类号
A63B69/18
代理机构
代理人
主权项
地址
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