4. Internal-combustion engines
  5. Four-cycle
  6. Single poppet valve
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Univalve engine

Internal-combustion engines – Four-cycle – Single poppet valve
Patent

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Vented valve for internal combustion engines

Internal-combustion engines – Four-cycle – Single poppet valve
Patent

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Vented valve mechanism for internal combustion engines

Internal-combustion engines – Four-cycle – Single poppet valve
Patent

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Vented valve mechanism for internal combustion engines

Internal-combustion engines – Four-cycle – Single poppet valve
Reexamination Certificate

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