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US Patent: 898,972
Quick-adjusting Micrometer
Patentee: Henry Owen Costello (exact or similar names) - Providence, RI USPTO Classifications: 33/825 Tool Categories: metalworking tools : machinist tools : measuring tools : micrometers Assignees: None Manufacturer: Not known to have been produced Witnesses: Charles L. Griesbauer C. H. Griesbauer William F. Costello John F. Dyer	Patent Dates: Applied: Jan. 09, 1908 Granted: Sep. 15, 1908 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens
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