Agricultural implements, namely, coulters; Automatic swimming pool cleaners and parts therefor; Bearings, as parts of machines; Cemented carbide tips; Centrifugal pumps; Counter-current swimming machines for use in swimming pools to enable swimming in place against an adjustable counter-current, featuring pumps, motor, and adjustable current director outlets; Machine parts, namely, roll mill bearings; Mechanical seals; Metal seal rings for use with turbomachinery and centrifuges; Pond and wat...