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| Patents for Benjamin C. Tilghman | |||||
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| Number | Date | Patentee | Title | Type | |
| 108,408 | Oct. 18, 1870 | B.C. Tilghman | Improvement in cutting and engraving stone, metal, glass, &c. | ||
| 416,873 | Dec. 10, 1889 | B.C. Tilghman | Cutting Metals by Electricity | electrical discharge machining | |