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发明名称	Reader's aid and bookmark
摘要
申请公布号	US2319436(A)	申请公布日期	1943.05.18
申请号	US19400371809	申请日期	1940.12.26
申请人	BAILIE ALFRED J	发明人	BAILIE ALFRED J.
分类号	G02B27/02	主分类号	G02B27/02
代理机构		代理人
主权项
地址

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