Security grille
Patent 4000590 Issued on January 4, 1977. Estimated Expiration Date: 
January 4, 1994. 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.
January 4, 1994. 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 1799308 1954559 2103130 2117950 2303718 3032777 3340661 3398491 3848918 InventorApplicationNo. 601499 filed on 08/04/1975US Classes:52/106, JAIL-TYPE STRUCTURE49/56, Moves relative to primary closure52/663, Discrete component; wholly internal; e.g., architectural grilleD25/38, Railing unit or fence (6)D25/48, For passage, e.g., door, etc.D25/50, GateD25/53Screen or guard (9)ExaminersPrimary: Faw, Price C. Jr.Assistant: Farber, Robert C. Attorney, Agent or FirmInternational ClassE06B 9/02 (20060101)AbstractA grille assembly readily mountable with a window frame for securing a window against unauthorized entry. The grille includes a plurality of horizontal members, each of which has longitudinally spaced, vertical openings. A plurality of vertical bars extend into the vertical openings of the horizontal members, and concealed mounting assemblies mount the horizontal members with the window frame. | |
