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US Patent: 280,296
Metal-screw machine
Patentees: Albert B. Curtis (exact or similar names) - Chicopee, MA Francis Curtis (exact or similar names) - Chicopee, MA USPTO Classifications: 470/62, 82/138 Tool Categories: metalworking machines : screw machines Assignees: None Manufacturer: Not known to have been produced Witnesses: William M. Chapin R. F. Hyde	Patent Dates: Applied: Jan. 09, 1883 Granted: Jun. 26, 1883 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for F. Curtis

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