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US Patent: 146,120
Water Motors for Sewing-Machines
Patentee: Oscar J. Backus (exact or similar names) - San Francisco, San Francisco County, CA USPTO Classifications: 415/121.2, 415/121.3, 415/151, 415/202 Tool Categories: propulsion and energy : water power : hydraulic motors Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 05, 1873 Granted: Jan. 06, 1874 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Backus Water Motor Co.

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