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US Patent: 527,651
Calipers
Patentee: John Bath (exact or similar names) - Hyde Park, MA USPTO Classifications: 33/501.4 Tool Categories: layout tools : measurement gauges Assignees: None Manufacturer: Not known to have been produced Witnesses: John Q. Adams A. E. Reniek, Jr. Ralph W. E. Hopper	Patent Dates: Applied: Apr. 04, 1894 Granted: Oct. 16, 1894 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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