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| Patents for T. D. Merwin | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 411,506 | Sep. 24, 1889 | C. Mattison | Chamfer-cutter | |
| 412,437 | Oct. 08, 1889 | P.B. Warner | Hoop-knotting machine | ||
| 431,525 | Jul. 01, 1890 | C. Mattison | Combined chamfer-cutter and lathe | ||
 | 455,644 | Jul. 07, 1891 | J.D. Sloane | Micrometer Calipers | |
 | 474,987 | May 17, 1892 | W. Church | Wrench | |
 | 480,251 | Aug. 09, 1892 | C. Cristadoro | Dovetailing-machine | |
 | 517,073 | Mar. 27, 1894 | J.D. Sloan | Micrometer Calipers | |
 | 552,351 | Dec. 31, 1895 | C. Cristadoro | Dovetail-mortising machine | |