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US Patent: 2,689
Improvement in plows
Patentee: Barnabas Langdon (exact or similar names) - Troy, NY USPTO Classifications: 114/79R, 172/721 Tool Categories: agricultural : plows Assignees: None Manufacturer: Not known to have been produced Witnesses: Daniel Whiting John C. Langdon	Patent Dates: Granted: Jun. 22, 1842 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Barnabas Langdon

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