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US Patent: 108,408
Improvement in cutting and engraving stone, metal, glass, &c.
Patentee: Benjamin C. Tilghman (exact or similar names) - Philadelphia, PA USPTO Classifications: 125/2, 451/102, 451/40, 451/91, 51/309 Tool Categories: Assignees: None Manufacturer: Not known to have been produced Witnesses: R. A. Tilghman W. M. Tilghman	Patent Dates: Granted: Oct. 18, 1870 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin
Description: This is the original patent for sand blasting.

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