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US Patent: 657,114
Power-hammer
Patentee: Leonard D. Howard (exact or similar names) - St. Johnsbury, VT USPTO Classifications: 72/434 Tool Categories: trade specific : blacksmith Assignees: None Manufacturer: L. D. Howard - St. Johnsbury, VT Witnesses: A. F. Nichols Rolfe Cobleigh	Patent Dates: Applied: Feb. 24, 1900 Granted: Sep. 04, 1900 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for L. D. Howard

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