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US Patent: 67,659
Gas Engine
Patentees:
Eugen Langen (exact or similar names) - Cologne, Prussia
Nicolaus August Otto (exact or similar names) - Cologne, Prussia

USPTO Classifications:
123/188.2, 123/22, 91/270, 92/136, 92/140

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:
Granted: Aug. 13, 1867

Patent Pictures:
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