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Dr C Otto and Co GmbH
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Dr C Otto and Co GmbH
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C10K1/04—Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials
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Oil, Petroleum & Natural Gas
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Organic Chemistry
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FR13837D1908-05-221911-02-16
Method and apparatus for separating tar from hot distillation gases, using tar, tar-laden sewage water, or both.
ExpiredFR13837E
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