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US Patent: 479,803
Grade Measure
Patentee: John M. Haise (exact or similar names) - Florence, Erie County, OH USPTO Classifications: 33/374, 33/388 Tool Categories: layout tools : levels : clinometers Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Sep. 11, 1891 Granted: Aug. 02, 1892 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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