发明名称 Rotary scraper for planter disks
摘要 A rotary scraper for the exterior of planter disks which is mounted on a bracket easily attachable to existing grain planters. The rotary scrapers are mounted on the front edge of double disk planter disks vertically centered with the planter disks and with at least one half of the scraper disk outside the circumference of the planter disk.
申请公布号 US4669550(A) 申请公布日期 1987.06.02
申请号 US19850770956 申请日期 1985.08.30
申请人 SITTRE, WAYNE R. 发明人 SITTRE, WAYNE R.
分类号 A01B15/16;A01B23/06;A01C5/06;(IPC1-7):A01B15/16 主分类号 A01B15/16
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