4. Internal-combustion engines
  5. Multiple piston, common nonrestrictive combustion chamber
  6. Four-cycle

Robert Wayne Burrahm

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High-efficiency, low emission gasoline engines for...

Internal-combustion engines – Charge forming device – Fuel injection system
Reexamination Certificate

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Opposed piston engine with reserve power capacity

Internal-combustion engines – Multiple piston – common nonrestrictive combustion chamber – Four-cycle
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2150655

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