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US Patent: 1,988,378
Boring Head and Gauge for Cylinder Reboring Machines
Patentee: Allen I. Dunn (exact or similar names) - Cedar Rapids, Linn County, IA USPTO Classifications: 33/636, 408/116, 408/154, 408/197, 408/99 Tool Categories: metalworking machines : drilling and boring : boring heads metalworking machines : drilling and boring : vertical boring mills Assignees: Cedar Rapids Engineering Co. - Cedar Rapids, Linn County, IA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Dec. 20, 1933 Granted: Jan. 15, 1935 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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