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US Patent: 142,494
Automatically Operating Shafts
Patentee: Frederick B. Miles (exact or similar names) - Philadelphia, PA USPTO Classifications: 74/625 Tool Categories: metalworking machines : metal lathes Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Aug. 04, 1873 Granted: Sep. 02, 1873 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Bement, Miles & Co.

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