
A widely used herbicide containing glyphosate, originally patented in 1974 by Monsanto as a broad-spectrum systemic weed killer.
And so they repatented in 1976 as a weed killer and rolled it out as Roundup as you know, which would become the the most successful weed killer in history.
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"The speaker explicitly mentions 'Roundup' as a weed killer that became the most successful in history, following its re-patenting in 1976."