Rotary fire escape,申请号US19280285717-传众专利搜索

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发明名称	Rotary fire escape
摘要
申请公布号	US1882145(A)	申请公布日期	1932.10.11
申请号	US19280285717	申请日期	1928.06.15
申请人	HIRSCHMAN SEYMOUR S	发明人	HIRSCHMAN SEYMOUR S.
分类号	A62B1/02	主分类号	A62B1/02
代理机构		代理人
主权项
地址

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