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US Patent: 1,654,843
Micrometer Caliper
Patentee: Earl C. Sparks (exact or similar names) - Cranston, RI USPTO Classifications: 33/817 Tool Categories: metalworking tools : machinist tools : measuring tools : micrometers Assignees: Brown & Sharpe Mfg. Co. - Providence, RI Manufacturer: Brown & Sharpe Mfg. Co. - Providence, RI Witnesses: none listed	Patent Dates: Applied: Mar. 31, 1927 Granted: Jan. 03, 1928 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.
Description: Joseph A. Miller - patent attorney

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