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Lord Kelvin, British mathematician and physicist ; 1897
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| Number | Title | Issue Date |
| 4117031 | Crude oil demulsifiers A condensation product obtained by first preparing A. an addition product of aliphatic aldehydes and phenol in a molar ratio of about 1 : 1 to 3 : 1, at temperatures in the range of from about 50° to 80° C, in the presence of an alkaline catalyst, And separa... | 09/26/1978 |