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...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.

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Class 257/E27.118 - Including semiconductor components sensitive to infrared radiation, light, or electromagnetic radiation of a shorter wavelength (EPO)


Subclass of Class 257 - Active solid-state devices (e.g., transistors, solid-state diodes)
Definition: This subclass is indented under subclass E27.117. This
No. of patents: 1
Last issue date: 07/15/2008


NumberTitleIssue Date
7400023Photoelectric converting film stack type solid-state image pickup device and method of producing the same
In a photoelectric converting film stack type solid-state image pickup device, a plurality of photoelectric converting film are stacked on a semiconductor substrate in which a signal readout circuit is formed, each of the photoelectric converting films is sandwiched... 		07/15/2008
 
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