Improvements in devices for holding loose leaves together in book or pad form,申请号GB19300026954-传众专利搜索

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发明名称	Improvements in devices for holding loose leaves together in book or pad form
摘要
申请公布号	GB351827(A)	申请公布日期	1931.07.02
申请号	GB19300026954	申请日期	1930.09.09
申请人	WILLI BERBERICH	发明人
分类号	B42F3/04;B42F13/20	主分类号	B42F3/04
代理机构		代理人
主权项
地址

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