Pet crab dwelling
Patent 5031572 Issued on July 16, 1991. Estimated Expiration Date: 
July 9, 2010. 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 9, 2010. 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 3269578 3283743 3327686 Newt sanctuary Aquarium Terrarium/aquarium combination Vivarium Patent #: 4958593 InventorApplicationNo. 550127 filed on 07/09/1990US Classes:119/246Aquarium combination (e.g., aquarium-terrarium, etc.)ExaminersPrimary: Hirsch, Paul J.Attorney, Agent or FirmInternational ClassA01K 063/00AbstractA box intended to be submerged within a home aquarium contains a platform for supporting small pet crabs in a dry environment. The box, completely open at the bottom, loosely fits over the platform and receives pumped air which leaks into the aquarium from below platform level. At one end of the platform is a ladder formed of a plastic sheet containing a plurality of holes that enable the crabs to climb upon the platform from the bottom of the aquarium. The box, platform and base upon which it stands are easily disassembled. | |
