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US Patent: 717,296
Micrometer Calipers
Patentee: Frank Spaulding (exact or similar names) - Providence, RI USPTO Classifications: 188/67, 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 L. S. Starrett Co. - Athol, Worcester County, MA Witnesses: Charles H. Luther, Jr. B. S. Webster Joseph A. Miller	Patent Dates: Applied: Feb. 06, 1902 Granted: Dec. 30, 1902 Patent Pictures: [ 1 | 2 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Brown & Sharpe Mfg. Co. "Vintage Machinery" entry for L. S. Starrett Co.
Description: Joseph A. Miller & Co. - patent attorneys This patent date and spindle locking mechanism was seen on a Starrett #2 micrometer.

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