13 LIVESTOCK AUTOMATIC DRINKING BOWLS AND OPERATING NOSE PADDLES THEREFOR, CEMENT ANCHORS, DOOR TRACKS, DOOR HANGERS AND HARDWARE THEREFOR, STALLS, STALL PARTITIONS, ATTACHMENTS AND FIXTURES THEREFOR, NECK CHAINS, FLOOR AND MANGER DRAINS, ((MILK PANELS)), STANCHIONS WITH AND WITHOUT OPERATING DEVICES, MANGERS, FEEDING SYSTEMS (FOR STALLS), FEED METERS, COW TRAINERS AND MILK HOUSE EQUIPMENT