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Inventor Profile:
Stephen Sears

Weed Killer

Stephen Snow Sears developed his invention, a chemical spray, on his farm near Nanton, Alberta. In the patent record, he claims his invention easily eliminates many harmful or pesky plants, especially Sow and Canada thistle, patent record for this inventionwithout causing damage to the environment. The three main ingredients are sodium chlorate,
calcium chloride and potassium bi-chromate. The directions instruct one to dilute the solution with water, and apply it by a sprayer or sprinkler. The roots of the plant then absorb the chemical without any injurious effects to the soil or human population.




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