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US Patent: 744,028
Beam-calipers
Patentee: Charles E. Billings (exact or similar names) - Hartford, CT USPTO Classifications: 33/823 Tool Categories: layout tools : measurement gauges Assignees: None Manufacturer: Not known to have been produced Witnesses: W. C. Abbott R. N. Pittman Frederic C. Billings D. E. Marchant	Patent Dates: Applied: Mar. 21, 1902 Granted: Nov. 17, 1903 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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