...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 |
| 7922833 | Gas regulator for thermal energy machining A thermal energy machining (“TEM”) machine gas handling system in which the improvement is a fluid-controlled pressure regulation subsystem for controlling the dispensing of a TEM process gas via the regulation of the pressure of the TEM process gas. Such subsys... | 04/12/2011 |
| 7007737 | Slab handling apparatus A slab handling apparatus comprising a foundation structure, a plurality of longitudinally spaced buffer members positioned on the foundation structure, and a plurality of longitudinally spaced roller assemblies connected to the respective buffer members with a lost... | 03/07/2006 |
| 6334906 | Method of oxygen cutting continususly cast billets, and apparatus for implementing the method The invention provides a method and apparatus for oxygen cutting continuously cast billets, in which a cutting member (8) and a trimming member (9) are positioned relative to the billet to be cut (1) by taking a reference directly on the billet (1) by mea... | 01/01/2002 |