"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 |
| 7422223 | Personal, lumbar friendly cargo carrier pack sled This invention is a lumbar-friendly cargo carrier sled that can be used by humans to move cargo across rough or snow covered terrain and is adapted for use in conjunction with skis or wheels. The sled has an adjustable harness that articulates, by pivoting about thr... | 09/09/2008 |