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US Patent: 531,971
Calipers or Dividers
Patentee: August C. Schaefer (exact or similar names) - St. Paul, MN USPTO Classifications: 33/558.07 Tool Categories: layout tools : calipers layout tools : compasses : dividers Assignees: None Manufacturer: Not known to have been produced Witnesses: Jason E. Hutchinson A. H. Norris Frank Johnson Fred Gosewisch	Patent Dates: Applied: Aug. 30, 1894 Granted: Jan. 01, 1895 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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