Draft responsive, penetration control mechanism for tractor carried soil working implements,申请号US19530384054-传众专利搜索

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发明名称	Draft responsive, penetration control mechanism for tractor carried soil working implements
摘要
申请公布号	US2785616(A)	申请公布日期	1957.03.19
申请号	US19530384054	申请日期	1953.10.05
申请人	DONALD E. WILLIAMS	发明人	JONES RICHARD TILTON
分类号	A01B63/04	主分类号	A01B63/04
代理机构		代理人
主权项
地址

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