Mortar-less interlocking building block system
Patent 4314431 Issued on February 9, 1982. Estimated Expiration Date: 
December 31, 1999. 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.
December 31, 1999. 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 1930951 2250319 InventorAssigneeApplicationNo. 06/108350 filed on 12/31/1979US Classes:52/259, Cast in situ material at module juncture52/300, VERTICAL STRUCTURE WITH UPPER TERMINAL BEARING PLATE OR CAP52/439, Section filling hollow or channel module52/592.6, Designed for stacking (e.g., key on top surface, mortise on bottom)D25/113Construction block or brick type (20)ExaminersPrimary: Perham, Alfred C.Attorney, Agent or FirmInternational ClassesE04B 2/46 (20060101)E04B 2/42 (20060101) E04B 2/02 (20060101) AbstractA set of interlocking building blocks capable of being assembled with each other forming wall structures without requiring mortar or any other binder. The set consists of four types of blocks and one lintel rib which are capable of forming wall structures and openings in said structures that are adapted to cooperate in locking relationship to prevent transverse or longitudinal movement of the blocks relative to one another. | |
