Tool, Standard Or Connection Patents (Class 172/681)
- Earth breaking part and separately attached wings (Class 172/722)
- With separable vertical cutter on centerline (Class 172/725)
- Having separable parts jointed at centerline (Class 172/726)
- With attached runner or depth gauge (Class 172/727)
- Winged (Class 172/730)
- Lateral extent decreases upwardly (Class 172/731)
- Triangular blade (Class 172/732)
- Constant height and V-shape (Class 172/733)
- Heating or lubricating (Class 172/755)
- Skeleton (Class 172/756)
- Furrow slice retainer (Class 172/757)
- Furrow slice cutter or breaker (Class 172/758)
- With additional element juxtaposed to moldboard (Class 172/759)
- Specific moldboard shape (Class 172/760)
- Serrated, toothed or notched point or share (Class 172/761)