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| Number | Title | Issue Date |
| 6295765 | Movable shelter A movable shelter for providing a shelter for animals that would be dry and warm. The movable shelter includes a base member including a first sprocket adapted to be rotatably mounted upon a ground such as a cement slab and also including a shaft securely... | 10/02/2001 |
| 3976032 | Poultry maintenance system having moving cages Apparatus is provided for maintaining a flock of poultry or the like. The system includes a number of cages which are transported in opposite directions along parallel paths. Upon reaching a path end, each cage is transferred in a straight line to an oppo... | 08/24/1976 |