Sidewalk door construction,申请号US19470726311-传众专利搜索

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发明名称	Sidewalk door construction
摘要
申请公布号	US2582540(A)	申请公布日期	1952.01.15
申请号	US19470726311	申请日期	1947.02.04
申请人	GRUSE JOHN W	发明人	GRUSE JOHN W.
分类号	E06B5/01	主分类号	E06B5/01
代理机构		代理人
主权项
地址

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