Patent No. 6,630,507: Why the U.S. government holds a patent on cannabis plant compounds
https://www.denverpost.com/2016/08/28/what-is-marijuana-patent-6630507/
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Patent No. 6,630,507: Why the U.S. government holds a patent on cannabis plant compounds
https://www.denverpost.com/2016/08/28/what-is-marijuana-patent-6630507/