Heavy duty scraper,申请号US19360072934-传众专利搜索

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发明名称	Heavy duty scraper
摘要
申请公布号	US2168319(A)	申请公布日期	1939.08.08
申请号	US19360072934	申请日期	1936.04.06
申请人	BIRD	发明人	BRODERSEN MAX M.;BIRD LEN O.
分类号	E02F3/64	主分类号	E02F3/64
代理机构		代理人
主权项
地址

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