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US Patent: 430,528
Valve Gear for Engines
Patentee:
Walter Osgood Knowlson (exact or similar names) - Troy, Rensselaer County, NY

USPTO Classifications:
74/3.2

Tool Categories:
propulsion and energy : steam engines : steam engine valve gear

Assignees:
Walter Osgood Knowlson - Troy, Rensselaer County, NY
James Richmond Knowlson - Troy, Rensselaer County, NY

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Mar. 24, 1890
Granted: Jun. 17, 1890

Patent Pictures:
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