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US Patent: 1,429,556
Inside Gauge
Patentee: Max Bartholdy (exact or similar names) - Essen, Germany USPTO Classifications: 279/2.12, 279/2.14, 33/544.5 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: Dec. 29, 1921 Granted: Sep. 19, 1922 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens
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