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"The idea that cavalry will be replaced by these iron coaches is absurd. It is little short of treasonous."
Aide-de-camp to Field Marshal Haig ; At a tank demonstration, 1916
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| Number | Title | Issue Date |
| 7227153 | Method for measuring ultraviolet radiation and ultraviolet measuring device An ultraviolet measuring method using an ultraviolet sensitive element, comprising: measuring an ultraviolet intensity with the ultraviolet sensitive element at a sun altitude; and determining an integrated ultravi... | 06/05/2007 |
| 6612843 | Globe base educational device The present invention comprises an educational device for use with an earth globe having ecliptic angle of inclination for teaching students the position of the earth relative to the sun through the various seasons. The educational device can also be used... | 09/02/2003 |
| 5186630 | Universal sun-path dial The invention described herein is a mechanical device that appearing uncrowded with lines, numbers, and other markings, depicts the sun's daily path and gives sunlight information, for any interested latitude, date, and time. A major dial is rotated on a ... | 02/16/1993 |
| 4971559 | Globe having means for indicating a day and night boundary A globe, comprising: a stationary base; a day and night boundary ring mounted on the stationary base; an arm supported at its base end by the day and night boundary ring so as to be rotatable around a first axial line; and a spherical globe main body rota... | 11/20/1990 |
| 4194306 | Planetarium educational device A planetarium educational device which illustrates the relative positioning and movement of the earth, moon, sun and other celestial objects in the solar system. The device also provides an illustrative means for depicting the changes in the ocean tides w... | 03/25/1980 |
| 4032754 | Global time system A global time system having a first disc divided into twenty-four equal sections, each section being formed by lines extending radially from the center of the first disc. Each line forming the sections representing a line of longitude. Circles are concent... | 06/28/1977 |
