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| Number | Title | Issue Date |
| 7334740 | Method and apparatus for melting snow and ice Disclosed in this invention is a method and device for de-icing, snow melting and thawing frozen ground. The invention is based on warm moisture-laden air that can be blown over the surface to be iced or thawed or it can be introduced into an enclosed area where de-... | 02/26/2008 |
| 7216654 | Dishwasher A dishwasher having a dishwasher is provided in which an intake port cover for closing a steam intake port is mechanically operated. The dishwasher has a cavity enclosed in part by a door, and a fan motor which drives a fan installed at an upper portion of the door.... | 05/15/2007 |
| 7162884 | Valve manifold for HVAC zone control A pressure and vacuum valve manifold system such as may be used, for example, to actuate pneumatic bladders controlling airflow in a forced air HVAC system to provide zone climate control. The valves are individually operable to connect a respective individual bladd... | 01/16/2007 |
| 4147302 | Home heating system control A heat control system designed to control individual radiators in a heating system where there is only one boiler supplying steam, or one heated fluid source such as a utility steam supply, and where there is no separate condensate return line; each radia... | 04/03/1979 |
