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发明名称
Spring jack
摘要
申请公布号
US1755088(A)
申请公布日期
1930.04.15
申请号
US19290335129
申请日期
1929.01.25
申请人
VICKREY BENJAMIN D
发明人
VICKREY BENJAMIN D.
分类号
B25B27/30
主分类号
B25B27/30
代理机构
代理人
主权项
地址
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