"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 |
| 4144784 | Safety guard for manual food slicer A guard for preventing the operator's fingers from contacting the sharp edges of a parallel rack of blades in a food slicer, such as a tomato slicer is provided by a set of parallel planar segments intermeshed between and extending slightly in front of th... | 03/20/1979 |