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US Patent: 19,398
Pump Valve
Patentees:
Calvin Woodward (exact or similar names) - New York, NY
George M. Woodward (exact or similar names) - New York, NY

USPTO Classifications:
417/536

Tool Categories:
industrial machines : pumps : pump valves

Assignees:
None

Manufacturer:
Woodward Steam-Pump Mfg. Co. - New York, NY

Witnesses:
Unknown

Patent Dates:
Granted: Feb. 16, 1858

Patent Pictures:
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