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US Patent: 332,244
Spring Calipers
Patentee: Edwin S. Field (exact or similar names) - Springfield, MA USPTO Classifications: 33/558.1 Tool Categories: layout tools : calipers Assignees: Edwin S. Field - Springfield, MA Joseph M. Davis - Worcester, MA John G. Soderberg - Worcester, MA Manufacturer: Not known to have been produced Witnesses: Ralph W. Ellis Thomas B. Warren	Patent Dates: Applied: Sep. 17, 1884 Granted: Dec. 15, 1885 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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