"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 |
| 7360947 | Temperature sensor apparatus An apparatus for temperature sensing is disclosed that includes a sensor tube and a cable assembly connected to and extending from said sensor tube wherein said cable assembly communicates electrically with the sensor tube for temperature sensing operations thereof.... | 04/22/2008 |
| 5345692 | Accessories for outside micrometers and calipers Extension standards are provided for outside micrometers and calipers. Sleeves engage the extension standards and the micrometer anvil and/or spindle, or the measuring surfaces of calipers, to selectably position the measuring gap and also to provide diff... | 09/13/1994 |
| 4461084 | Internal measuring gauge The disclosed invention is an internal measuring gauge having a stationary jaw, a bridge member, a pair of shafts each affixed between the stationary jaw and the bridge member parallel one to the other. In addition, there is a sliding jaw mounted on the t... | 07/24/1984 |