1. 美國專利查詢 United States Patent and Trademark Office http://www.uspto.gov/ (或者在google打入 US patent) 2. Issued Patents (PatFT) (full-text since 1976, full-page images since 1790) http://www.uspto.gov/patft/index.html 各種搜尋法要自己試試看, 一下子就上手 3. 這裡會有兩個連結, setup其中之一的軟體才可以看影像檔(專利文字及圖片,可以列印) http://www.uspto.gov/patft/help/images.htm 例如查詢 bogie (in title) 1 6,745,700 Radial bogie with steering beam mount unitized brake 2 6,732,841 Block holder for a bogie brake 3 6,712,549 Double-axis oscillating bogie wheels 4 6,682,280 Bogie wheel carrier 5 6,679,535 Safety wheel, method of manufacturing such a wheel and bogie equipped with such a wheel 6 6,666,446 Replaceable roller bogie for document feeding apparatus 7 6,601,520 Motor bogie for a vehicle having an integral low-slung floor 8 6,561,104 Bogie for rail vehicles with wheels with a variable track 9 6,523,481 Bogie for use with a monorail car 10 6,443,071 Drive bogie for a rail way vehicle and rail way vehicle equipped with such a bogie ............... 可以得到 133 項結果, 再挑選有興趣的去看, 相信對社上的想走實力派的同仁有幫助 從美國專利火車相關的部分下手 --

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