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发明名称
Bookmarker
摘要
申请公布号
US2457662(A)
申请公布日期
1948.12.28
申请号
US19450619359
申请日期
1945.09.29
申请人
HAMILTON JOE W
发明人
HAMILTON JOE W.
分类号
B42D9/00
主分类号
B42D9/00
代理机构
代理人
主权项
地址
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