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"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 |
| 4417611 | Screwdriver A screwdriver is provided with a handle which includes a wheel member and a head member. The wheel member is formed about the upper portion of the shank of the screwdriver and is anchored to rotate therewith. The head member is mounted by ball bearing ass... | 11/29/1983 |
