Window well cover,申请号US19540447354-传众专利搜索

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发明名称	Window well cover
摘要
申请公布号	US2793688(A)	申请公布日期	1957.05.28
申请号	US19540447354	申请日期	1954.08.02
申请人	ROBEY RICHARD E	发明人	ROBEY RICHARD E.
分类号	E06B9/52	主分类号	E06B9/52
代理机构		代理人
主权项
地址

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