Earth scraper apparatus,申请号US19480009448-传众专利搜索

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发明名称	Earth scraper apparatus
摘要
申请公布号	US2634517(A)	申请公布日期	1953.04.14
申请号	US19480009448	申请日期	1948.02.19
申请人	SEARS, ROEBUCK AND CO.	发明人	ZINK WILLIAM L.
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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