Scraper blade attachments for tractors having hydraulicallycontrolled draw bars,申请号US19570705985-传众专利搜索

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发明名称	Scraper blade attachments for tractors having hydraulicallycontrolled draw bars
摘要
申请公布号	US2883776(A)	申请公布日期	1959.04.28
申请号	US19570705985	申请日期	1957.12.30
申请人	ORSCHELN ALBERT J	发明人	ORSCHELN ALBERT J.
分类号	A01B31/00;A63H1/20;A63H1/30;A63H3/18	主分类号	A01B31/00
代理机构		代理人
主权项
地址

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