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CA Patent: CA-11,808
Improvements on gas regulators
Patentee: George Smith Woodruff (exact or similar names) - Toronto, ON Canada USPTO Classifications: Tool Categories: propulsion and energy : steam engines : steam engine governors Assignees: None Manufacturer: George S. Woodruff - Toronto, ON Canada Witnesses: Unknown	Patent Dates: Granted: Sep. 23, 1880 Patent Pictures: CIPO Data Espacenet patent Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Geo. S. Woodruff

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