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US Patent: 191,133
Improvement in gages for bits
Patentee: Rodolphus Gardiner (exact or similar names) - Olneyville, RI USPTO Classifications: 408/202 Tool Categories: gauges specialty tools : gauges Assignees: None Manufacturer: Not known to have been produced Witnesses: A. J. Cushing J. F. Gardiner	Patent Dates: Applied: Apr. 04, 1877 Granted: May 22, 1877 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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