Pile,申请号US19290357596-传众专利搜索

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发明名称	Pile
摘要
申请公布号	US1931249(A)	申请公布日期	1933.10.17
申请号	US19290357596	申请日期	1929.04.23
申请人	THE FIRM: VEREINIGTE STAHLWERKE AKTIENGESELLSCHAFT	发明人	BURKHARDT EMIL
分类号	E02D1/04;E21B25/00;E21B25/08;E21B25/10	主分类号	E02D1/04
代理机构		代理人
主权项
地址

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