Who invented aluminum alloy sliding doors and windows?

Patent application number cn200310124139.9 patent application date 2003. 12.20 announcement (announcement) of aluminum alloy profiles and sliding doors and windows manufactured by them CN 1554852 announcement (announcement) date 2004. Priority application for certification date (patent consists of upper fixed 2 1, upper rail, lower rail, open edge sealing 16 or edge sealing gusset plate, upper 22, lower 23, lamp enterprise 24, hook enterprise 25, screen material and corner. Window sash and door leaf rails of upper rail and lower rail are set as wide rails, which are fixedly connected with their top ends by two supporting plates 5. The edge seal consists of open edge seal 16 or double-sided edge seal and edge seal gusset plate or cover plate 17. The movable angle consists of open edge sealing 16 or cover plate 17 and circular tube 15. The upper fixing part 2 1 and the end parts of the upper and lower rails are respectively connected with the edge sealing opening edge 65438+. The cover plate 17 is buckled on the opening edge between the upper fixing 2 1 and the upper rail 16, and the edge sealing buckle plate is buckled on the opening edge between the upper rail and the lower rail 16 to form an outer frame. An inner frame composed of upper and lower rails 22 and 23, optical hooks 24 and 25, and a screen frame composed of screen material are respectively assembled on the outer frame.