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US Patent: 78,933
Steam Balanced Valve
Patentee:
David Davy (exact or similar names) - Sheffield, York County, England

USPTO Classifications:
137/625.68

Tool Categories:
metalworking machines : forging machines : drop hammers
propulsion and energy : steam engines : steam engine valves

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Granted: Jun. 16, 1868

Patent Pictures:
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