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US Patent: 433,246
Valve for Gas Engines
Patentee:
Samuel Lawson - New York, NY

USPTO Classifications:
123/144, 123/81B

Tool Categories:
propulsion and energy : internal combustion engines : internal combustion engine valves

Assignees:
Samuel Lawson - New York, NY
Alonzo T. Welch - New York, NY

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jan. 04, 1890
Granted: Jul. 29, 1890

Patent Pictures:
USPTO pdf tiff
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