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发明名称
Screw jack
摘要
申请公布号
US2838949(A)
申请公布日期
1958.06.17
申请号
US19540474929
申请日期
1954.12.13
申请人
GRIGSBY GAIL G
发明人
GRIGSBY GAIL G.
分类号
F16H25/22;F16K7/06
主分类号
F16H25/22
代理机构
代理人
主权项
地址
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