Apparatus or implements specially adapted for breaking, disintegrating, or loosening layers of

Official title: Apparatus or implements specially adapted for breaking, disintegrating, or loosening layers of ice or hard snow {with or without clearing or removing (E01H5/10 takes precedence); Roughening ice or hard snow by means of tools (by means of gritting materials E01H10/00; roughening or breaking-up pavements E01C23/08, E01C23/12)}

E01H5/12 (Apparatus or implements specially adapted for breaking, disintegrating, or loosening layers of) appears on 124 US grants and 130 published applications in this corpus.