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US Patent: 502,649
Speed Indicator for Shafting
Patentee: Hans C. Andersen (exact or similar names) - Cambridge, MA USPTO Classifications: 235/104, 235/120 Tool Categories: layout tools : measurement gauges Assignees: Thorwald Hansen - West Somerville, MA Manufacturer: Not known to have been produced Witnesses: Louis N. Gowell Emma L. Bennett John C. Edwards George W. Gregory	Patent Dates: Applied: Nov. 25, 1892 Granted: Aug. 01, 1893 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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