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发明名称
Jack
摘要
申请公布号
US2183917(A)
申请公布日期
1939.12.19
申请号
US19380198129
申请日期
1938.03.25
申请人
WILLARD MEAD JAMES
发明人
MEAD JAMES WILLARD
分类号
B66F3/08;B66F3/16
主分类号
B66F3/08
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