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US Patent: 510,879
Gas Engine Attachment
Patentees: Mora M. Barrett (exact or similar names) - San Francisco, CA John F. Daly (exact or similar names) - San Francisco, CA USPTO Classifications: 123/89, 74/3 Tool Categories: propulsion and energy : internal combustion engines : internal combustion engine governors Assignees: None Manufacturer: Union Gas Engine Co. - San Francisco, CA Witnesses: Unknown	Patent Dates: Applied: Dec. 22, 1892 Granted: Dec. 19, 1893 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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