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| Number | Title | Issue Date |
| 7685949 | Feeding door of heat treatment furnace A feeding door of a heat treatment furnace comprises a box, at least a starter, and a door plank. The door plank is pivotally coupled with the front side of the box. The door plank is consisted of at least two pivotally coupled door plates. The box has a chamber for... | 03/30/2010 |
| 6913650 | Component impregnation A machine for impregnating a die cast metal part with liquid impregnant comprises an impregnation chamber having liquid impregnant in a lower portion, an opening for ingress and egress of the parts being defined in a side wall of the chamber above the liquid impregn... | 07/05/2005 |
| 5263425 | Waste processing system door assembly A door assembly for an air lock of a waste processing system comprising a vertical sliding door member having a perimeter entirely supported when the sliding door member is in a closed position and is sealed by a selectively inflatable gasket assembly loc... | 11/23/1993 |
| 4972785 | Free hanging reheat furnace door A free hanging reheat furnace door has a main door section with modular refractory units secured to a frame in lateral rows and a detachable bottom door section formed from channels and struts which is also covered by modular refractory units. The door se... | 11/27/1990 |
| 4666404 | Door for slab-heating furnace and the like The specification discloses a door for a slab-heating furnace. A series of closure members are positioned in side-by-side relationship from one side of the opening to the other. Each closure member has one or more sections pivotally connected to an adjace... | 05/19/1987 |
| 4530660 | Analytical furnace window assembly The specification discloses a window assembly for an analytical furnace enabling the window to be readily and easily removed and reinstalled to facilitate servicing of the window. The assembly includes a one-piece fused silica housing having concentric in... | 07/23/1985 |
| 4320739 | Combustion type heater A jacketed wood burning stove of the type having an inner firebox door and an outer jacket door in front of the firebox door and wherein a flash inhibitor is provided consisting of a relatively small auxiliary firebox door which is manually biased open bu... | 03/23/1982 |
