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US Patent: 292,415
Comparator
Patentee: Samuel Darling (exact or similar names) - Providence, Providence County, RI USPTO Classifications: 33/228, 374/142 Tool Categories: metalworking tools : machinist tools : measuring tools : comparators Assignees: None Manufacturer: Not known to have been produced Witnesses: Jacob Kettner John E. Hall	Patent Dates: Applied: Mar. 01, 1883 Granted: Jan. 22, 1884 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Brown & Sharpe Mfg. Co

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