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US Patent: 720,773
Outside Calipers
Patentee: Martin H. Ball (exact or similar names) - Watervliet, NY USPTO Classifications: 33/558.05 Tool Categories: layout tools : calipers Assignees: None Manufacturer: Not known to have been produced Witnesses: Otis P. Stone H. C. Kimmey	Patent Dates: Applied: Jul. 11, 1902 Granted: Feb. 17, 1903 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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