DRAG LINE SCRAPER OF SAND,申请号PL19860261250-传众专利搜索

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发明名称	DRAG LINE SCRAPER OF SAND
摘要
申请公布号	PL148193(B1)	申请公布日期	1989.09.30
申请号	PL19860261250	申请日期	1986.09.01
申请人		发明人
分类号	C02F;C02F1/00;(IPC1-7):C02F1/00	主分类号	C02F
代理机构		代理人
主权项
地址

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