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US Patent: 452,568
Gas Engine
Patentee:
Edwin W. Evans (exact or similar names) - Philadelphia, PA

USPTO Classifications:
123/144

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Mar. 19, 1891
Granted: May 19, 1891

Patent Pictures:
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