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| Patents for Alfred S. Brown | |||||
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| Number | Date | Patentee | Title | Type | |
| 406,968 | Jul. 16, 1889 | N. Tesla | Dynamo-electric machine | electric generators | |
| 413,353 | Oct. 22, 1889 | N. Tesla | Method of Obtaining Direct from Alternating Currents | ||
| 413,940 | Oct. 29, 1889 | J.T. Hawkins | Pipe Wrench | alligator wrenches | |