US PATENT SUBCLASS 172 / 617
.~.~.~.~ Also pivoted about horizontal axis

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


172 /   HD   EARTH WORKING

613  DF  PLURAL RELATIVELY MOVABLE TOOLS {14}
614  DF  .~ Tool pivots on pivoted member when member moves {1}
615  DF  .~.~ Tools connected to parallel pivoted bars {1}
616  DF  .~.~.~ Bars pivoted about vertical axis {1}
617.~.~.~.~ Also pivoted about horizontal axis

DEFINITION

Classification: 172/617

(under subclass 616) Apparatus in which the parallel bars are also mounted to pivot about a horizontal axis to allow the bars to pivot in a vertical plane.