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Method for removing dissolved heavy metals from waste oils, industrial wastewaters, or any polar solvent
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Method of winning precious metals from geological brines
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Treatment of trees for prevention and cure of wilt diseases
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Optical fluid contamination and change monitor
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Process for the recovery of waste pickle liquor
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Regenerative plant for waste pickle liquor
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Self adjusting-short pulse detecting and amplifying circuit
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Regenerative plant for waste pickle liquor
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