"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 5472341 | Burner having low pollutant emissions A burner capable of burning low pressure combustible gas with minimum pollutant emissions. The gas is preheated to hydrocarbon cracking temperatures in a heat exchanger located directly within an elongated water jacketed combustion chamber of the burner. ... | 12/05/1995 |