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US Patent: 452,174
Gas Engine Attachment
Patentee: Mora M. Barrett (exact or similar names) - San Francisco, CA USPTO Classifications: 123/153, 123/162 Tool Categories: propulsion and energy : internal combustion engines : ignition systems Assignees: None Manufacturer: Union Gas Engine Co. - San Francisco, CA Witnesses: Unknown	Patent Dates: Applied: Jan. 07, 1891 Granted: May 12, 1891 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Union Gas Engine Co.

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