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| Patents for Westinghouse Electric Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 404,567 | Jun. 04, 1889 | O.B. Shallenberger | System of generators for alternating electric currents | |
 | 417,794 | Dec. 24, 1889 | N. Tesla, A. Schmid | Armature for electric machines | |