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US Patent: 64,391
Improvement in Dividers
Patentee: Horatio Whiting (exact or similar names) - New York, NY USPTO Classifications: 33/558.06 Tool Categories: layout tools : compasses Assignees: None Manufacturer: Not known to have been produced Witnesses: Albert W. Brown Alex. F. Roberts Theo. Fisch J. A. Service	Patent Dates: Granted: Apr. 30, 1867 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Ralph Brendler
Description: This set of dividers features a captive nut mounted in one arm, which engages a rack cut into the arc joining the two legs.

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