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发明名称
Cover lifter
摘要
申请公布号
US2339819(A)
申请公布日期
1944.01.25
申请号
US19420464504
申请日期
1942.11.04
申请人
SHAFER ARTHUR C
发明人
SHAFER ARTHUR C.
分类号
B66F15/00
主分类号
B66F15/00
代理机构
代理人
主权项
地址
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