Machines and implements for agriculture, namely, tractor towed, trailing, mounted and semi mounted implements, namely, spraying machines, plowshares, moldboards and coulters, tillers, plows, chisel plows, two-way plows, one-way plows, stubble plows, subsoil plows, cultivators, rotary cultivators, harrows, harrow combines, rotary bladed harrows, rotary cross harrows, power harrows, earth augers; agricultural implements, namely, coulters, manure skim coulters, skim coulters, landside coulters, disk coulters, coulters with blades, subsoiler tines, seed drills; parts of agricultural machines, namely, supporting wheels, driving wheels, supporting and driving wheels; structural parts of tractor towed agricultural implements, namely, arms for packer rollers; structural parts of plows, namely, plow disk markers and reverse turn markers; structural parts of plows; agricultural seed bed preparers and seed planters, namely, tractor towed agricultural implements in the nature of tillers and cultivators, earth levelers, row formers in the nature of furrow openers and closers, hillers, fertilizer and seed placers, seed depositors and covers, namely, agricultural seed planting machine and agricultural seed planting machines in the nature of seed wheels, seed drills, seed meters, air seeders, sowers, and combinations thereof, and spare structural parts and replacement structural parts for the aforementioned agricultural machines