4. Internal-combustion engines
  5. Oscillating piston
  6. Toroidal cylinder
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arc-piston engine

Internal-combustion engines – Oscillating piston – Toroidal cylinder
Patent

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Arc-piston engine

Internal-combustion engines – Oscillating piston – Toroidal cylinder
Patent

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Axially controlled rotary energy converters for engines and...

Internal-combustion engines – Oscillating piston – Toroidal cylinder
Reexamination Certificate

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