Counterbalancing structure for disappearing stairway,申请号US19650490368-传众专利搜索

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法人/股东/高管

发明名称	Counterbalancing structure for disappearing stairway
摘要
申请公布号	US3331466(A)	申请公布日期	1967.07.18
申请号	US19650490368	申请日期	1965.09.27
申请人	WEL-BILT PRODUCTS COMPANY	发明人	SR. CLEITUS E. WEBB,
分类号	E04F11/06	主分类号	E04F11/06
代理机构		代理人
主权项
地址

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