Auger tooth with side edge blade,申请号US19630317540-传众专利搜索

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法人/股东/高管

发明名称	Auger tooth with side edge blade
摘要
申请公布号	US3190379(A)	申请公布日期	1965.06.22
申请号	US19630317540	申请日期	1963.10.21
申请人	GERALD A. PETERSEN;ANITA E. PETERSEN	发明人	TROEPPL WILLIAM M.;PETERSEN GERALD A.
分类号	E21B10/44	主分类号	E21B10/44
代理机构		代理人
主权项
地址

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