Half circle window shutter/blind
Patent 6341447 Issued on January 29, 2002. Estimated Expiration Date: 
March 3, 2020. 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.
March 3, 2020. 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 397322 492671 602967 842969 1060187 1411399 1447189 2815545 3075257 Air grille components and air grille therefrom InventorApplicationNo. 518983 filed on 03/03/2000US Classes:49/74.1, Louver-type closures (e.g., slats or panels)49/40, CONVEX OR CONCAVE CLOSURE AND OPENING160/84.07Fan type (e.g., for arched windows)ExaminersPrimary: Strimbu, Gregory J.Attorney, Agent or FirmInternational ClassE06B 007/086AbstractA shutter for a half-circle window having a top, a base, and a plurality of slats capable of interlocking engagement and rotatably secured between the top and the base wherein the slats are further held in position by springs providing pressure against the slats. | |
