Bookrest,申请号US19280257600-传众专利搜索

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发明名称	Bookrest
摘要
申请公布号	US1810205(A)	申请公布日期	1931.06.16
申请号	US19280257600	申请日期	1928.02.28
申请人	THEODORE GENSMER	发明人	GENSMER THEODORE
分类号	A47B23/04	主分类号	A47B23/04
代理机构		代理人
主权项
地址

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