Sculptural objects
Patent 4238905 Issued on December 16, 1980. Estimated Expiration Date: 
August 17, 1998. 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.
August 17, 1998. 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 2570625 2795893 2839841 2872754 2939243 3184882 3561146 3659360 InventorApplicationNo. 05/934531 filed on 08/17/1978US Classes:446/92, Including permanent magnet or suction cup to secure elements273/157RGeometrical figures, pictures, and mapsExaminersPrimary: Shay, F. BarryInternational ClassA63H 33/04 (20060101)AbstractSets of blocks, each set being a plurality of similarly shaped polyhedrons having faces of at least two different polygonal shapes. A set may consist of truncated octahedrons, of pentagonal prisms or of dodecahedrons. Magnetic or other means are provided in the faces so that matching faces may be joined and the blocks of a set built up in a large variety of close packing arrays without overlapping or interstices between the blocks. The blocks may be solid or hollow and may be coated with metallic material. | |
