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发明名称
Screw jack
摘要
申请公布号
US1795630(A)
申请公布日期
1931.03.10
申请号
US19280272401
申请日期
1928.04.24
申请人
RAYMOND M. RAMSEY;LILLIAN D. LANG
发明人
WILSON EARL L.
分类号
B66F13/00
主分类号
B66F13/00
代理机构
代理人
主权项
地址
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