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| Number | Title | Issue Date |
| 5603906 | Low NOx burner A low NOx burner combustion system which may be adjusted for optimum burn rates, temperature and oxygen levels. The burner incorporates a plurality of gas nozzles which individually inspirate a portion of the combustion air and a spin vane diff... | 02/18/1997 |
| 5257927 | Low NOx burner A low NOx burner combustion system which may be adjusted for optimum burn rates, temperature and oxygen levels. The burner incorporates a plurality of gas nozzles which individually inspirate a portion of the combustion air and a spin vane diff... | 11/02/1993 |
