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US Patent: 1,111,833
Nut-tapping machine
Patentee: Frederick C. Hoffman (exact or similar names) - Thomaston, CT USPTO Classifications: 221/184, 470/101, 470/178 Tool Categories: Assignees: Blake & Johnson Co. - Waterbury, CT Manufacturer: Not known to have been produced Witnesses: Lancaster P. Clark Robert P. Lewis	Patent Dates: Applied: Aug. 15, 1912 Granted: Sep. 29, 1914 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Blake & Johnson Co.

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