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US Patent: 1,390,501
Motor-driven surface-treating machine
Patentee: Alex A. Clarke (exact or similar names) - Dallas, TX USPTO Classifications: 144/117.4, 451/358 Tool Categories: woodworking machines : sanding machines : drum sanders Assignees: None Manufacturer: Clarke Sanding Machine Co. - Chicago, IL Witnesses: Unknown	Patent Dates: Applied: Feb. 13, 1920 Granted: Sep. 13, 1921 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Clarke Sanding Machine Co.

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