Portable half-step stairway unit,申请号US19830534338F-传众专利搜索

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发明名称	Portable half-step stairway unit
摘要
申请公布号	USD287283(S1)	申请公布日期	1986.12.16
申请号	US19830534338F	申请日期	1983.09.21
申请人	JOHNSON PAUL	发明人	JOHNSON PAUL
分类号		主分类号
代理机构		代理人
主权项
地址

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