"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
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 5009178 | Self activating keel A keel system for small sailboats. The keel system being comprised of two fins (20P) and (20S) that are allowed to swing on pivots (24) independently, between the hull on which they are mounted and a limiting surface (25). The deployment of fins (20P) and... | 04/23/1991 |