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US Patent: 421,477
Gas Engine
Patentees:
John Charles Beckfeld (exact or similar names) - Allegheny, PA
Albert Schmid (exact or similar names) - Allegheny, PA

USPTO Classifications:
60/39.828, 60/731, 60/737

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jul. 18, 1889
Granted: Feb. 18, 1890

Patent Pictures:
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