| 摘要 |
301,076. Schanzer, S., (trading as Wernicke & Beyer, Dr.). Nov. 25. 1927, [Convention date]. No Patent granted (Sealing fee not paid). Motor spirit.-Hydroquinone is added to petrol, benzol, or other motor spirit to reduce knock, etc.; 0.2-0.5 per cent, preferably dissolved in a mixture of alcohol and mineral oil, is suitable. |
