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发明名称
Crutch
摘要
申请公布号
US2696826(A)
申请公布日期
1954.12.14
申请号
US19520294537
申请日期
1952.06.20
申请人
ROLAND GWYNNE DAVIES
发明人
DAVIES ERIC R.
分类号
A61H3/02
主分类号
A61H3/02
代理机构
代理人
主权项
地址
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