Improvements in fastening devices for letter files,申请号GB19360021593-传众专利搜索

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发明名称	Improvements in fastening devices for letter files
摘要
申请公布号	GB459115(A)	申请公布日期	1937.01.01
申请号	GB19360021593	申请日期	1936.08.05
申请人	HARRY VOLLER NORRIS GRAVELEY	发明人
分类号	B42F13/02	主分类号	B42F13/02
代理机构		代理人
主权项
地址

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