"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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| Number | Title | Issue Date |
| 7243377 | Hat with interchangable advertising media Embodiments of the invention generally provide a wearable hat that contains an interchangeable advertising media location positioned on an exterior portion thereof. The interchangeable advertising media location is generally configured to receive an advertising medi... | 07/17/2007 |
| 6398948 | Method of removing contaminants from used oil In a method of removing acidic compounds, color, and polynuclear aromatic hydrocarbons, and for removing or converting hydrocarbons containing heteroatoms from used oil distillate, phase transfer catalysts are employed to facilitate the transfer of inorga... | 06/04/2002 |
| 6372122 | Method of removing contaminants from petroleum distillates In a method of removing acidic compounds, color, and polynuclear aromatic hydrocarbons, and for removing or converting hydrocarbons containing heteroatoms from petroleum distillates, phase transfer catalyst is employed to facilitate the transfer of inorga... | 04/16/2002 |
| 6320090 | Method of removing contaminants from petroleum distillates Polynuclear aromatic hydrocarbons (PAHs) and other contaminants are removed from petroleum distillates by mixing a solvent with petroleum distillate to extract the contaminants therefrom. The solvent is recovered and distilled to separate the contaminants... | 11/20/2001 |