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US Patent: 221,950
Gas-governors
Patentee:
George Smith Woodruff (exact or similar names) - Grand Rapids, MI

USPTO Classifications:
137/505.41, 92/99

Tool Categories:
propulsion and energy : steam engines : steam engine governors

Assignees:
None

Manufacturer:
George S. Woodruff - Toronto, ON Canada

Witnesses:
John G. Ridout
Donald C. Ridout

Patent Dates:
Applied: Jul. 15, 1879
Granted: Nov. 25, 1879

Patent Pictures:
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Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Geo. S. Woodruff

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