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US Patent: 925,224
Insulating Piston for Steam Engines
Patentee: Ferdinand A. Pritshau (exact or similar names) - Toledo, Lucas County, OH USPTO Classifications: 92/249 Tool Categories: propulsion and energy : steam engines : steam engine pistons Assignees: Ferdinand A. Pritshau - Toledo, Lucas County, OH Robinson Bell - Toledo, Lucas County, OH William E. Hanson - Toledo, Lucas County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 12, 1909 Granted: Jun. 15, 1909 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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