Improvements in and relating to mattresses,申请号GB19370020796-传众专利搜索

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发明名称	Improvements in and relating to mattresses
摘要
申请公布号	GB491683(A)	申请公布日期	1938.09.07
申请号	GB19370020796	申请日期	1937.07.27
申请人	WILLIAM JOSEPH HALL	发明人
分类号	A47C23/155	主分类号	A47C23/155
代理机构		代理人
主权项
地址

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