Window casement
Patent 4327795 Issued on May 4, 1982. Estimated Expiration Date: 
January 12, 2001. 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 12, 2001. 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 ReferencesInventorApplicationNo. 06/224143 filed on 01/12/1981US Classes:160/98, Roll type flexible panel126/629, With device to circulate air from room of building through collector126/702, Interconnected slats (e.g., blinds, shutters)126/908, Particular chemical160/107, Plural strip, slat, or panel type160/236, Strip or slat structure49/64Of interconnected movable louversExaminersPrimary: Caun, Peter M.International ClassesE06B 3/28 (20060101)E06B 3/04 (20060101) AbstractA window casement designed to be attached to a window frame outside the window sash operative on the one hand to serve as a storm window and on the other hand to provide supplemental heating during the winter and cooling during the summer. | |
