Magnetic geometric building system
Patent 6017220 Issued on January 25, 2000. Estimated Expiration Date: 
June 16, 2017. 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.
June 16, 2017. 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 1236234 3077696 3095668 3196566 3276148 Geometric construction kit Magnetic toy Geometric toy Building blocks Magnetic building block InventorApplicationNo. 876516 filed on 06/16/1997US Classes:434/301, Electricity or magnetism434/211, Geometry, trigonometry, or physical mathematic model structure446/92Including permanent magnet or suction cup to secure elementsExaminersPrimary: Mancene, GeneAssistant: Priddy, Michael B. Attorney, Agent or FirmForeign Patent References
International ClassesG09B 023/04G09B 023/18 A63H 033/26 AbstractA construction kit comprising a plurality of connectable magnetic members having north and south magnetic poles on their opposite faces.Field of SearchIncluding permanent magnet or suction cup to secure elementsHAVING PERMANENT MAGNET (NOT MOTOR ASSOCIATED) Electricity or magnetism Magnet included in display or demonstration Having magnet associated therewith Magnet included in teaching means Using playing card Magnet included in teaching means Geometry, trigonometry, or physical mathematic model structure Permanent magnet | |
