Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7370914 | Compactly foldable wingback chair A collapsible wingback chair that includes a seat base portion and to which is secured a lower portion of a pair of side wings that include upper portions that are movable relative to a chair back that is pivotally mounted so as to be movable between an upright posi... | 05/13/2008 |
| 7258361 | Collapsible conveyance folding transport chair folding wheelchair A collapsible, foldable support structure and conveyance has a frame assembly with multiple interconnected frame members, junction blocks located at intersecting ends of some of the frame members, and wheels attached to the junction blocks or directly to frame membe... | 08/21/2007 |
| 6499804 | Easy chair device An easy chair device has a leg frame, and a chair main body disposed on the leg frame. Two backrest support rods and two armrest support rods extend upward from the leg frame. The chair main body has a backrest, a seat, and two armrests. The armrests are ... | 12/31/2002 |
