"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 |
| 7117879 | Rain cover for hay enclosures A rain cover (10) to protect bales of hay (200) within a hay enclosure framework (100) having horizontal top (101) and bottom (102) framework segments connected to one another by vertical support struts (103) wherein, the ra... | 10/10/2006 |
| 6349732 | Collapsible small vehicle enclosure A collapsible enclosure that generally comprises a symmetrical pair of base members and a pliable protective cover supported by a plurality of internal frame members pivotally connected on the axis of the hinge points for the base members. By manually rot... | 02/26/2002 |
| 5833329 | Lightweight rack A lightweight rack structure is provided for use in a space station. The rack includes a deployable/folding rigid front frame including two side rails and upper and lower cross members connected to the two side rails. A flexible shell is connected to the ... | 11/10/1998 |
| 5746237 | Portable garage A portable, expandable protective vehicle cover comprising: a base, the base is sized to support a vehicle thereon and having a substantially flat upper surface; a canopy, the canopy is supported by a telescoping frame, the telescoping frame comprises a p... | 05/05/1998 |
| 5601105 | Self-erecting tent A self-erecting tent having three closed loop frame members that crisscross themselves along their respective left and right mid-points. The first closed loop frame member is threaded through the front sleeve and the rear arch sleeve of the tent body. The... | 02/11/1997 |
| 5271423 | Collapsible fish house A collapsible fish house having a pair of hinged together base sections with a flexible protective covering supported by a plurality of collapsible bow units attached at their lower ends to the base sections with the entire cover and bow structure being c... | 12/21/1993 |