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US Patent: 86,346
Safety Valve
Patentee:
John Ashcroft (exact or similar names) - New York, NY

USPTO Classifications:
137/473, 137/532, 251/263, 251/282

Tool Categories:
propulsion and energy : steam apparatus : steam safety valves

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Feb. 02, 1869

Patent Pictures:
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