...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7397179 | Flat panel display having reduced line resistance A flat panel display reduces the line resistance of a driving power supply line and prevents a voltage drop in the driving power supply line so as to obtain uniform resolution and luminance. The flat panel display includes a substrate, a display region formed on the... | 07/08/2008 |
| 6498430 | Plasma display device In a plasma display device comprising a pair of opposing insulating substrates and a plurality of light emitting cells 5 formed from partition walls which divide the space between the insulating substrates while a plurality of electrodes are formed in the... | 12/24/2002 |
| 6307527 | LED display assembly Surface mounted LEDs are arrayed in special patterns to provide a relatively high resolution dot-matrix visual display and/or multi-segment character displays. Especially abbreviated solder bonding pads are utilized to obtain a higher density packing of t... | 10/23/2001 |
| 4401919 | Indirectly heated Wehnelt cathode To achieve an optimum reduction of the warmup time of a Wehnelt cathode, by maintaining a good efficiency, it is proposed to use as a cathode a triode system arranged within the usual cathode sleeve, with the inside of the base plate, on the outside of wh... | 08/30/1983 |