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US Patent: 1,435,574
Lubricating System for Piston Engines
Patentee: Frank Ackerman (exact or similar names) - St. Louis, MO USPTO Classifications: 184/103.1, 184/13.1 Tool Categories: propulsion and energy : internal combustion engines : internal combustion engine lubrication Assignees: Curtis & Co. Mfg. Co. - Wellston, St. Louis County, MO Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jan. 10, 1921 Granted: Nov. 14, 1922 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Curtis & Co. Manufacturing Co.

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