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 |
| 6941710 | Columnar jack concealing device The present invention provides a device for concealing and covering a columnar jack for columnar supports and a method of concealing a columnar jack using a columnar jack concealing kit. The device comprises a strap member, a skirt sized and shaped for covering the ... | 09/13/2005 |
| 6810631 | Pool deck drain and safety fence support structure A novel pool deck structure channel located beneath a swimming pool deck surface is disclosed that incorporates both a drainage device and a pool safety fence support structure. The unique channel design eliminate the need to have separate support holes drilled in a... | 11/02/2004 |
| 6668511 | Formwork for pillars It is constituted by several plates (1), provided in its outer side (4) with transverse ribs (5), formed by C-shaped profiles and joined together to form a prismatic contour (7), closed by the inner flat sides of all the plates, the plates comprising a me... | 12/30/2003 |
| 6216414 | Hinge base construction for light poles This is a hinge base construction for light poles which provides a non-corrosive hinge connection between the pole and the fixed base member. The connection includes non-corrosive elements to preserve the pivotal relationship between the stationary base a... | 04/17/2001 |
| 5782040 | Breakaway sign post repair system A new Breakaway Sign Post Repair System for reusing a broken sign post thereby reducing the cost to repair the broken post while providing a breakaway post that will produce less damage to vehicles and people if a vehicle should hit the sign post. The inv... | 07/21/1998 |
| 3958381 | Concrete filled tapered tubular tower A tower supporting loads at heights up to 180 feet and higher, the tower being tubular and tapered convergently in an upward direction, the tower being filled with concrete throughout a major portion of the height.... | 05/25/1976 |
