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US Patent: 424,605
Exhaust-valve for engines
Patentee:
Noble T. Greene - Providence, RI

USPTO Classifications:
91/250

Tool Categories:
propulsion and energy : steam engines : steam engine valves

Assignees:
None

Manufacturer:
Providence Steam Engine Co. - Providence, RI

Witnesses:
Charles Hannigan
George H. Remington

Patent Dates:
Applied: Oct. 26, 1889
Granted: Apr. 01, 1890

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Providence Steam Engine Co.

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