
Tree trimmer machine. Tree trimmer machine
US6474377B1. Self-propelled climbing tree trimmer. Google Patents Publication number US6474377B1 US6474377B1 US10/068,130 US6813002A US6474377B1 US 6474377 B1 US6474377 B1 US 6474377B1 US 6813002 A US6813002 A US 6813002A US 6474377 B1 US6474377 B1 US 6474377B1 Authority US United States Prior art keywords tree ring trimmer ring gear self Prior art date 2002-02-08 Legal status (The legal status is an assumption […]
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