Auxiliary cage
Patent 4850306 Issued on July 25, 1989. Estimated Expiration Date: 
July 5, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 5, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3774576 Animal cage assembly with reusable filter cap Gymnastic device for small pet animals Patent #: 4677938 InventorApplicationNo. 07/214164 filed on 07/05/1988US Classes:119/455Battery of cagesExaminersPrimary: Weiss, John G.International ClassesA01K 1/02 (20060101)A01K 1/03 (20060101) AbstractAn auxiliary cage for positioning on an animal tank such cage having a generally closed rectangular structure disposed above the open top of the animal tank with a suspended floor structure positioned within the tank with openings in such suspended floor and in the bottom of the closed cage structure and a ramp extending from the bottom of the tank to the suspended floor opening and a further ramp extending from the suspended floor to the opening in the bottom of the cage structure on top of the tank. | |
