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US Patent: 1,451,736
Internal Gauge
Patentee: Karl Lauer (exact or similar names) - Essen, Germany USPTO Classifications: 33/501.2 Tool Categories: layout tools : measurement gauges Assignees: Fried. Krupp Aktiengesellschaft - Essen-on-the-Ruhr, Germany Manufacturer: Not known to have been produced Witnesses: none listed	Patent Dates: Applied: Nov. 29, 1921 Granted: Apr. 17, 1923 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens
Description: Knight & brothers - patent attorneys Specification signed in Germany 22 Oct 1921.

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