4. Internal-combustion engines
  5. Multiple cylinder
  6. Cylinders in-line

David A. Okonsky

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"O"-Type engine construction

Internal-combustion engines – Transmission mechanism from piston – Including clutch
Patent

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2-4 Cycle change-over engine and its control system

Internal-combustion engines – Convertible cycle
Patent

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2-cycle uni-flow spark-ignition engine

Internal-combustion engines – Two-cycle – Whirl through piston-controlled ports
Patent

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4-cycle 12-cylinder engine

Internal-combustion engines – Multiple cylinder
Patent

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4-cycle engine

Internal-combustion engines – Multiple cylinder – Cylinders radiating
Patent

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