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The United States Patent and Trademark Office (USPTO) patent databases can be accessed at: https://www.uspto.gov/patents/search/patent-public-search.
For guidance on using the Patent Public Search tool, including search techniques and features, please refer to the USPTO’s quick reference guides: https://www.uspto.gov/patents/search/patent-public-search/quick-reference-guides.
Alternatively, US patents can also be searched and downloaded (via the “Download PDF” option) from Google Patents: https://patents.google.com/.
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