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发明名称
UPSTAIRS/DOWNSTAIRS WALKING AID
摘要
申请公布号
GB8619247(D0)
申请公布日期
1986.09.17
申请号
GB19860019247
申请日期
1986.08.06
申请人
ALLEN F
发明人
分类号
E04F11/18
主分类号
E04F11/18
代理机构
代理人
主权项
地址
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