SW Patent History By BethRyan Oct 9, 1984 SECO/WARWICK Trademark Sep 10, 1985 Ingot Pusher Furnace 4,540,363 Apr 29, 1986 Improved Ingot Pusher 4,585,412 Oct 14, 1986 Baffle Improvements 4,616,997 Jun 30, 1987 Vertical Air Flow 4,676,743 Aug 22, 1989 Reducing Heat Loss 4,859,178 Jul 3, 1990 Rail Drawbridges 4,938,690 Jul 17, 1990 Adjustable Baffles 4,941,823 Sep 7, 1993 Melter/Holder Control Systems Dec 21, 1993 Convection CAB Brazing 5,271,545 Oct 10, 2000 ACCUBRAZE Control 6,129,258 Oct 17, 2000 Whirl-A-Way Quench 6,132,534 Nov 21, 2000 Convection CAB Improvements RE36,960 May 2, 2006 Jet Impingement Tech. 7,037,106 Mar 20, 2007 Vacuum HPQ Power Mgt. 7,193,188 Apr 22, 2008 Hydrogen Vacuum Hardening 7,361,299 Jul 9, 2008 Vertical Air Flow Improvements 4,729,735
