Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7252502 | Method and system for combined standing pilot safety and temperature setting The method and apparatus provides a controller (which might comprise a microprocessor) that can control gas flow to a pilot burner in fluid communication with a manual pilot valve and an automatic pilot valve. The exemplary embodiments can comprise a selectable inpu... | 08/07/2007 |
| 5865164 | Fluid flow valves and cooking machine control systems utilizing such valves A cooking machine control system for controlling the consumption of fuel by cooking machines, including cooking machines of the type used in restaurant kitchens, such as gas/barbecue broilers, and home cooking machines such as grills, and gas flow valves ... | 02/02/1999 |
| 5607294 | Device for automatically controlling the operation of a burner in general A device for automatically controlling the operation of a burner comprises an electric control unit which controls the ignition and the flame of the burner and which opens a normally-closed solenoid valve disposed in a first fuel-supply line to the burner... | 03/04/1997 |
| 4413975 | Combination control with high/low pilot gas flow A combination control for main and pilot burners of gas burner apparatus wherein a thermostatically controlled redundant simultaneously controls the supply of gas to pilot burner and main burner gas outlets. A pilot flow passage has a first branch passage... | 11/08/1983 |
