Scraper,申请号US19310506521-传众专利搜索

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发明名称	Scraper
摘要
申请公布号	US1857157(A)	申请公布日期	1932.05.10
申请号	US19310506521	申请日期	1931.01.05
申请人	LE TOURNEAU ROBERT G	发明人	TOURNEAU ROBERT G. LE
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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