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US Patent: 20,281
Block for Repairing T-rails Clamp for Railroad Track Iron
Patentees: Sanford Mason (exact or similar names) - Michigan City, IN Edward M Davis (exact or similar names) - Michigan City, IN USPTO Classifications: 269/218 Tool Categories: Assignees: None Manufacturer: Not known to have been produced Witnesses: L B Wright Wm. B. W. O'Brian	Patent Dates: Granted: May 18, 1858 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Carl Matthews

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