|
US2876564A
|
|
Sloper
|
|
US2751832A
|
|
Rotary pulverizer
|
|
US2673409A
|
|
Adjustable wing unit for ditcher blades
|
|
US2668376A
|
|
Lister unit for ditchers
|
|
US2640286A
|
|
Ditch cleaner and ridger
|
|
US2365387A
|
|
Leveling control for implements
|
|
US2316397A
|
|
Adjustable draft connection unit for implements
|
|
US2297938A
|
|
Lister mounting for ditch cleaners
|
|
US2136911A
|
|
Ditch digger and cleaner
|
|
CA521692A
|
|
Ditch cleaner and ridger
|
|
CA411572A
|
|
Implement levelling control
|
|
CA514047A
|
|
Lister unit for ditchers
|
|
CA408318A
|
|
Ditching apparatus
|
|
CA514046A
|
|
Adjustable wing unit for ditcher blades
|
|
CA511480A
|
|
Stabilizing sled for ditchers
|
