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US Patent: 1,993
Manufacture of plows
Patentee: Elbridge G. Matthews (exact or similar names) - Worcester, MA USPTO Classifications: 144/134.1, 144/278.1 Tool Categories: agricultural : plows Assignees: Draper Ruggles - Worcester, MA Joel Nourse - Worcester, MA J. C. Mason - Worcester, MA Manufacturer: Ruggles, Nourse, Mason & Co. - Worcester, MA Witnesses: Unknown	Patent Dates: Granted: Feb. 23, 1841 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Worcester Historical Museum page on Ruggles, Nourse, Mason & Co.

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