Mattress clamping device,申请号US19400337224-传众专利搜索

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发明名称	Mattress clamping device
摘要
申请公布号	US2257554(A)	申请公布日期	1941.09.30
申请号	US19400337224	申请日期	1940.05.25
申请人	HITCHCOCK ETHEL I	发明人	HITCHCOCK ETHEL I.
分类号	A47C21/02	主分类号	A47C21/02
代理机构		代理人
主权项
地址

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