Stair climbing hand trucks,申请号US19550491289-传众专利搜索

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发明名称	Stair climbing hand trucks
摘要
申请公布号	US2823921(A)	申请公布日期	1958.02.18
申请号	US19550491289	申请日期	1955.03.01
申请人	ALBERT T. O'NEIL AND GUNNAR H. DANIELSON	发明人	LAGAARD ALEXANDER S. T.
分类号	B62B5/02;B62B5/04	主分类号	B62B5/02
代理机构		代理人
主权项
地址

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