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US Patent: 127,747
Improvement in Apparatus for Operating Steam-Engine
Patentee:
John Donnelly (exact or similar names) - Hudson, Columbia County, NY

USPTO Classifications:
123/56.2, 188/71.1, 74/56

Tool Categories:
propulsion and energy : steam engines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Jun. 11, 1872

Patent Pictures:
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