Rain actuated closure device,申请号US19540420712-传众专利搜索

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发明名称	Rain actuated closure device
摘要
申请公布号	US2809826(A)	申请公布日期	1957.10.15
申请号	US19540420712	申请日期	1954.04.02
申请人	GRAHAM GEORGE M	发明人	GRAHAM GEORGE M.
分类号	E05F1/00	主分类号	E05F1/00
代理机构		代理人
主权项
地址

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