Back support adjustment for torsion chair,申请号US19630296294-传众专利搜索

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发明名称	Back support adjustment for torsion chair
摘要
申请公布号	US3224807(A)	申请公布日期	1965.12.21
申请号	US19630296294	申请日期	1963.07.19
申请人	STEELCASE, INC.	发明人	WELCH PHILLIP CRAIG;MATZ ROY W.
分类号	A47C3/026	主分类号	A47C3/026
代理机构		代理人
主权项
地址

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