Sorting of perforated cards and sheets,申请号US19400336297-传众专利搜索

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发明名称	Sorting of perforated cards and sheets
摘要
申请公布号	US2270786(A)	申请公布日期	1942.01.20
申请号	US19400336297	申请日期	1940.05.20
申请人	KEMP PORTMAN-DIXON ERNEST	发明人	PORTMAN-DIXON ERNEST KEMP
分类号	G06K21/04	主分类号	G06K21/04
代理机构		代理人
主权项
地址

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