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Karl Marx
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| Number | Title | Issue Date |
| 6930433 | Brushless electro-mechanical device An electromotive machine having a stator element and a rotor element, the stator element including at least one set of N preferably toroidally shaped electromagnetic members, the electromagnetic members arranged along an arc a predetermined distance apart defining a... | 08/16/2005 |
| 4204777 | Matrix printer control system A system of controlling the operation of a matrix printer wherein printing is performed in each direction of travel of a printing element carriage. A printer control large scale integrated device is combined with a programmable character memory device and... | 05/27/1980 |