Issued Patents All Time
Showing 51–65 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8011920 | Valve assemblies for heating devices | — | 2011-09-06 |
| 7967007 | Heater configured to operate with a first or second fuel | — | 2011-06-28 |
| 7967006 | Dual fuel heater | — | 2011-06-28 |
| 7730765 | Oxygen depletion sensor | — | 2010-06-08 |
| 7677236 | Heater configured to operate with a first or second fuel | — | 2010-03-16 |
| 7654820 | Control valves for heaters and fireplace devices | — | 2010-02-02 |
| 7607426 | Dual fuel heater | — | 2009-10-27 |
| 7434447 | Oxygen depletion sensor | — | 2008-10-14 |
| 7013886 | Plastic shell heater | — | 2006-03-21 |
| 6517640 | Vacuum cleaner apparatus and return system for use with the same | — | 2003-02-11 |
| 6276742 | Roof and body mounted apparatus for covering automobile windshields | Dai Lei | 2001-08-21 |
| 6245159 | Vacuum cleaner apparatus and return system for use with the same | — | 2001-06-12 |
| 6168225 | Apparatus for covering automobile windshields | Dai Lei | 2001-01-02 |
| 6044838 | Fume exhaust apparatus for cooking stoves | — | 2000-04-04 |
| 5807098 | Gas heater with alarm system | — | 1998-09-15 |