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US Patent: 2,491,940
Universal Milling Head
Patentee: Charles Tree (exact or similar names) - Racine, WI USPTO Classifications: 409/216, 409/218, 409/230 Tool Categories: metalworking machines : milling machines : milling machine accessories Assignees: None Manufacturer: Not known to have been produced Witnesses: none listed	Patent Dates: Applied: Nov. 07, 1947 Granted: Dec. 20, 1949 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Tree Tool and Die Works

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