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US Patent: 1,337,018
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Patentees: George B. Lockey (exact or similar names) - Pittsburgh, PA Albert F. Lawson (exact or similar names) - Pittsburgh, PA USPTO Classifications: 33/199R Tool Categories: layout tools : measurement gauges Assignees: None Manufacturer: Not known to have been produced Witnesses: Robert D. Totten John F. Will	Patent Dates: Applied: Feb. 14, 1918 Granted: Apr. 13, 1920 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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