Two-way spring for infants' cribs,申请号US19390279780-传众专利搜索

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发明名称	Two-way spring for infants' cribs
摘要
申请公布号	US2234261(A)	申请公布日期	1941.03.11
申请号	US19390279780	申请日期	1939.06.19
申请人	SAMUEL KROLL;KROLL NATHAN J	发明人	KROLL SAMUEL;KROLL NATHAN J.
分类号	A47D7/03	主分类号	A47D7/03
代理机构		代理人
主权项
地址

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