Broom,申请号US19370173338-传众专利搜索

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发明名称	Broom
摘要
申请公布号	US2238716(A)	申请公布日期	1941.04.15
申请号	US19370173338	申请日期	1937.11.08
申请人	WELLS IRA M	发明人	WELLS IRA M.
分类号	E01C19/15;E01H1/05	主分类号	E01C19/15
代理机构		代理人
主权项
地址

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