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来自维基百科，自由的百科全书
美國專利商標局[1]（英語：United States Patent and Trademark Office，簡稱PTO或USPTO）是美國商務部下的一個機構，為發明家和他們的發明相關提供專利保護、商品商標註冊和知識產權證明。
Seamless Wikipedia browsing. On steroids.
Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.
