Hydraulically-Driven Arm-Type Articulating Flail Mowers; Linkage Mounted Power-Driven Flail Mowers for Use with Agricultural Tractors; Rigid Tine and Spring Tine Multi-Row Agricultural Cultivators; Ground-Driven Rotary Harrows; High Speed Ground Driven Rotary Surface Cultivators; Hydraulically-Operated Earth Moving Blades for Front and Rear Attachment to Agricultural Tractors; Heavy Duty Offset Disc Harrows; Tractor-Mounted Ditch Cleaning Machines; Tractor Mounted Hedge and Scrub Cutting Mach...