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US Patent: 1,103,918
Hammer
Patentee: John F. Overcash (exact or similar names) - Primghar, O'Brien County, IA USPTO Classifications: 72/434, 72/441, 72/446 Tool Categories: metalworking machines : forging machines : trip and helve hammers Assignees: None Manufacturer: Northwestern Power Hammer Co. - Primghar, O'Brien County, IA Witnesses: Unknown	Patent Dates: Applied: Jul. 31, 1913 Granted: Jul. 14, 1914 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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