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| Patents for H. C. Townsend | |||||
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| Number | Date | Patentee | Title | Type | |
| RE6,082 | Oct. 13, 1874 | F.A. Huntington | Improvement in shingle machines | shingle machines | |
| 257,588 | May 09, 1882 | N.S. Keith | Electric Light Regulator | electric arc lamps | |