4. Internal-combustion engines
  5. High tension ignition system
  6. Having a specific ignition coil

Toshihiro Ohkama

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Firing state discrimination system for internal combustion...

Measuring and testing – Engine detonation – Specific type of detonation sensor
Reexamination Certificate

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Plug-hole-installed ignition coil unit for internal...

Internal-combustion engines – High tension ignition system – Having a specific ignition coil
Reexamination Certificate

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Spark plug for internal combustion engine

Electric lamp and discharge devices – Spark plugs – Particular electrode structure or spacing
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2646234

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