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发明名称
Electric lifting jack
摘要
申请公布号
US2218733(A)
申请公布日期
1940.10.22
申请号
US19380197333
申请日期
1938.03.22
申请人
ROY T. WATTS;PAUL OSTRUK
发明人
WATTS ROY T.
分类号
B66F3/12;B66F3/44
主分类号
B66F3/12
代理机构
代理人
主权项
地址
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