附加元件
立即下載 Mozilla Firefox，體驗快速、自由地在網路中穿梭，並且享受成千上萬的擴充套件！
關閉
Patents Search Engine 20110922
作者: Search Master
Google Patents is a search engine from Google that indexes patents and patent applications from the United States Patent and Trademark Office (USPTO)
關於此附加元件
With Google Patents, you can now search the full text of the U.S. patent corpus and find patents that interest you
