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US Patent: 283,564
Right Angled Level
Patentee: Bozwell B. Butt (exact or similar names) - Richmond, VA USPTO Classifications: 33/354, 33/374, 33/383 Tool Categories: layout tools : levels : machinist levels layout tools : levels : inclinometers Assignees: None Manufacturer: Not known to have been produced Witnesses: Charles M. Jones Holland Butt	Patent Dates: Applied: Dec. 07, 1882 Granted: Aug. 21, 1883 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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