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US Patent: 540,140
Power Hammer
Patentees: Royal B. Boynton (exact or similar names) - West Townsend, Middlesex County, MA Daniel L. Chandler (exact or similar names) - Ayer, Middlesex County, MA Frank E. Tenney (exact or similar names) - Ayer, Middlesex County, MA USPTO Classifications: 72/450, 74/583 Tool Categories: metalworking machines : forging machines : power hammers Assignees: Royal B. Boynton - West Townsend, Middlesex County, MA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: May 18, 1894 Granted: May 28, 1895 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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