...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 |
| 4842475 | Computer controlled adaptive compliance assembly workstation An adaptive compliance system wherein the movement of an orientation stat is controlled in combination with its interaction with an assembly robot to vary the stiffness between the two structures.... | 06/27/1989 |
| 4727471 | Miniature lightweight digital camera for robotic vision system applications A robot arm with a vision system affixed thereto. A gripper acquires and object at an acquisition site and carries the object to a target site. During travel the position of the object is determined by the vision system viewing the object in two positions... | 02/23/1988 |