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US Patent: 99,698
Improvement in Calipers
Patentees: T. C. Page (exact or similar names) - Chicopee, MA George W. Hadley (exact or similar names) - Chicopee, MA USPTO Classifications: 33/558.1 Tool Categories: layout tools : calipers Assignees: None Manufacturer: Unknown Witnesses: Albert Perkins Chas. M. Taylor A. O. Bradley H. H. Howard	Patent Dates: Granted: Feb. 08, 1870 Patent Pictures: [ 1 | 2 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Ralph Brendler
Description: This design features a single-piece construction with a loop at the top, and an unusual arm retaining mechanism

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