Steel window structure,申请号US19510247914-传众专利搜索

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发明名称	Steel window structure
摘要
申请公布号	US2638189(A)	申请公布日期	1953.05.12
申请号	US19510247914	申请日期	1951.09.24
申请人	WATKINS WILLIAM C	发明人	WATKINS WILLIAM C.
分类号	E06B3/46	主分类号	E06B3/46
代理机构		代理人
主权项
地址

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