Singer obtained his first patent, for a machine to drill rock, selling it for $2,000 (or over $150,000 in 2024 dollars) to the I & M Canal Building Company
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Singer obtained his first patent, for a machine to drill rock, selling it for $2,000 (or over $150,000 in 2024 dollars) to the I & M Canal Building Company
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-17 from Wikipedia. The archived copy is preserved so this citation survives link rot.