Mechanical stair elevator,申请号GB19560003039-传众专利搜索

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发明名称	Mechanical stair elevator
摘要
申请公布号	GB781245(A)	申请公布日期	1957.08.14
申请号	GB19560003039	申请日期	1956.01.31
申请人	ERNST SUNDBERG	发明人
分类号	B66B21/02	主分类号	B66B21/02
代理机构		代理人
主权项
地址

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