Quotables
"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 7237373 | Stalk roll with oppositely tapering body and drivers A stalk roll for a harvesting device for harvesting crop heads of stalk-like plants. The stalk roll is provided with a roll body having projecting drivers distributed around its periphery. The pull-in speed of the stalk rolls in a picking region where the crop heads... | 07/03/2007 |
| 5210516 | PTC thermistor and PTC thermistor producing method, and resistor with a PTC thermistor A PTC thermistor has its substrate entirely coated with an insulating glass material except for the area where a silver electrode is formed. Such a thermistor may be produced by coating a substrate with an insulating glass material, forming a silver layer... | 05/11/1993 |
