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US Patent: 571,545
Manual motor Treadle for grindstone
Patentee: Jacob Steffenson (exact or similar names) - North Cape, WI USPTO Classifications: 74/42 Tool Categories: metalworking machines : grinders : grindstone frames propulsion and energy : human powered apparatus Assignees: Jacob Steffenson - North Cape, WI James Ferdricksen - North Cape, WI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 27, 1896 Granted: Nov. 17, 1896 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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