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Class Information
Number: D23/329
Name: Environmental heating and cooling; fluid handling and sanitary equipment > Heating or cooling > Furnace
Description:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| D554243 |
Panel sections for an air handler door |
Oct. 30, 2007 |
| D550338 |
Panel sections for an air handler door |
Sep. 4, 2007 |
| D549808 |
Cover for a burner |
Aug. 28, 2007 |
| D549809 |
Panel sections for an air handler door |
Aug. 28, 2007 |
| D502254 |
Door panel for a residential gas furnace |
Feb. 22, 2005 |
| D502253 |
Door panel for a residential gas furnace |
Feb. 22, 2005 |
| D501544 |
Door panel for a residential gas furnace |
Feb. 1, 2005 |
| D466597 |
Roller hearth reheat furnace tire |
Dec. 3, 2002 |
| D421296 |
Burner |
Feb. 29, 2000 |
| D407479 |
Support base |
Mar. 30, 1999 |
| D382339 |
Arcuate cast refractory and steel segment of an annealing furnace base |
Aug. 12, 1997 |
| D377391 |
Pellet hopper for a pellet-burning grill |
Jan. 14, 1997 |
| D374073 |
Cast refractory side segment of an annealing furnace base |
Sep. 24, 1996 |
| D374072 |
Assembly of arcuate cast refractory and steel segments of an annealing furnace base |
Sep. 24, 1996 |
| D371836 |
Assembly of cast refractory segments of an annealing furnace base |
Jul. 16, 1996 |
| D371837 |
Cast refractory corner segment of an annealing furnace base |
Jul. 16, 1996 |
| D360258 |
Heat exchanger for fuel fired furnaces |
Jul. 11, 1995 |
| D357063 |
Furnace enclosure with double doors unit for a firebox |
Apr. 4, 1995 |
| D350189 |
Front and side panels of a firebox with automatic feed hopper |
Aug. 30, 1994 |
| D345203 |
Double door unit for a firebox |
Mar. 15, 1994 |
| D300772 |
Friction furnace |
Apr. 18, 1989 |
| D297045 |
Friction furnace |
Aug. 2, 1988 |
| D292228 |
Down discharge heating and cooling unit |
Oct. 6, 1987 |
| D270370 |
Firebox |
Aug. 30, 1983 |
| D266106 |
Furnace |
Sep. 7, 1982 |
| D252526 |
Furnace |
Jul. 31, 1979 |
| D251438 |
Wood burning furnace |
Mar. 27, 1979 |
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