"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Application No. | Application Title | Issue Date |
| 20080122145 | Gas Washing Device The invention relates to a gas purge device for a metallurgical melting vessel, (1), comprising a conically shaped ceramic body (2) getting at its top side (3) in contact with a heat (4) contained in the melting vessel (1), said cerami... | 05/29/2008 |