Spirally bound sheaf and sheaf device,申请号US19330664852-传众专利搜索

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发明名称	Spirally bound sheaf and sheaf device
摘要
申请公布号	US2083703(A)	申请公布日期	1937.06.15
申请号	US19330664852	申请日期	1933.04.07
申请人	WALTER GRUMBACHER	发明人	GRUMBACHER WALTER
分类号	B42B5/12	主分类号	B42B5/12
代理机构		代理人
主权项
地址

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