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US Patent: 75,741
Improvement in railroad-switches
Patentees: George L. Du Laney (exact or similar names) - Mechanicsburg, PA J. A. Kaufman (exact or similar names) - Mechanicsburg, PA USPTO Classifications: 246/315, 246/329, 246/370 Tool Categories: transportation : railroads : track and switches Assignees: None Manufacturer: Not known to have been produced Witnesses: Henry Hall Eli Beck	Patent Dates: Granted: Mar. 24, 1868 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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