Security barrier
Patent 4671012 Issued on June 9, 1987. Estimated Expiration Date: 
June 14, 2005. 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 14, 2005. 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 999682 2722722 2794217 3738062 Adjustable grills for use as doors, windows, gates or the like Security gate Escapable-window-security-guard system Safety guard Patent #: 4437265 InventorsApplicationNo. 06/744719 filed on 06/14/1985US Classes:49/55, Adjustable to various size opening49/57, RemovableD25/38Railing unit or fence (6)ExaminersPrimary: Downey, KennethAttorney, Agent or FirmInternational ClassE06B 9/01 (20060101)Foreign Application Priority Data1984-06-19 CAAbstractA guard device adapted to bar an opening, such as a window or door of a house, is disclosed comprising in combination a number of bars being adapted to lie across the opening, an inner casing being adapted to secure the bars, an outer casing being adapted to be attached by a fastener about the opening and being adapted to receive the inner casing to cover the fastener, a connector being adapted to releasably connect the inner casing to the outer casing, and a lock adapted to lock and unlock the connector. | |
