"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Application No. | Application Title | Issue Date |
| 20100088908 | DEVICE AND METHOD FOR DETERMINING VERTICAL POSITIONS The invention relates to a device and a method for determining the vertical spacing of objects while carrying out positioning tasks with a vertical travel portion. The object of providing a device and a method for determining the vertical spacing of objects while carryi... | 04/15/2010 |
| 20090320308 | Gauge for determining angle of sloped ground and method of using same A gauge for determining the angle of sloped ground includes a panel, having a transparent window located in it, which can be held by a user so that the sloped ground can be viewed through the window. The panel has a spatial reference associated with it which allows the ... | 12/31/2009 |
| 20060021235 | Electronic appliance indicating inclination The invention concerns an appliance indicating the inclination of a device along two spatial directions said appliance being designed to be associated with the device, and comprising a housing wherein are arranged: a first instantaneous inclination sensor for measuring ... | 02/02/2006 |