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| Patents for Benjamin C. Tilghman | |||||
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| Number | Title | Classification(s) | |||
| 108,408 | Improvement in cutting and engraving stone, metal, glass, &c. | 125/2, 451/102, 451/40, 451/91, 51/309 | |||
| 416,873 | Cutting Metals by Electricity | 219/50, 219/68, 451/53 | |||