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发明名称
Positive grip lifting tool
摘要
申请公布号
US2550424(A)
申请公布日期
1951.04.24
申请号
US19480055387
申请日期
1948.10.19
申请人
PENN PENN W
发明人
PENN PENN W.
分类号
B66C1/48
主分类号
B66C1/48
代理机构
代理人
主权项
地址
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