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US Patent: 253,850
Gas Heating Apparatus
Patentee: Samuel Darling (exact or similar names) - Providence, RI USPTO Classifications: 126/214C, 126/227, 126/237, 126/248, 126/275R, 126/39K Tool Categories: propulsion and energy : internal combustion engines : gas and gasoline engines Assignees: None Manufacturer: Not known to have been produced Witnesses: George H. Remington Samuel J. Ladd Charles Hannigan	Patent Dates: Applied: Jul. 12, 1881 Granted: Feb. 21, 1882 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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