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United States Utility Patents
7,057,140 - 7,057,149

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NumberTitle
7,057,140 Water heater
7,057,141 Temperature control method and apparatus
7,057,142 Oven control system
7,057,143 Fixing heater and image fixing apparatus incorporating the same
7,057,144 Induction heating device
7,057,145 Menu selection device in microwave oven
7,057,146 Optical pickup having a diffraction grating and a hologram element
7,057,147 Imaging system and method for collecting energy from at least two sensing elements adjacent one another between rows of sensing elements
7,057,148 Optical tracking sensor method
7,057,149 Method and system for controlling a secondary amplifier with a primary amplifier in an optical network



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