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发明名称
Invalid lift
摘要
申请公布号
US2466289(A)
申请公布日期
1949.04.05
申请号
US19470738099
申请日期
1947.03.29
申请人
WELCH CHARLES H
发明人
WELCH CHARLES H.
分类号
A61G7/10
主分类号
A61G7/10
代理机构
代理人
主权项
地址
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