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US Patent: 501,910
Machine for hollowing staves
Patentee: Arza M. Benson (exact or similar names) - Cleveland, OH USPTO Classifications: 144/155, 144/159 Tool Categories: trade specific : cooper Assignees: None Manufacturer: A. M. Benson - Cleveland, OH Witnesses: David T. Davies William Secher	Patent Dates: Applied: Aug. 29, 1892 Granted: Jul. 25, 1893 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for A. M. Benson

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