Ventilating spring cushion,申请号US19530386340-传众专利搜索

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发明名称	Ventilating spring cushion
摘要
申请公布号	US2801679(A)	申请公布日期	1957.08.06
申请号	US19530386340	申请日期	1953.10.15
申请人	R. O. KENT CO.	发明人	CRANE SAMUEL P.
分类号	A47C7/42	主分类号	A47C7/42
代理机构		代理人
主权项
地址

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