4. Internal-combustion engines
  5. Lubricators
  6. Crankcase, pressure control

Masakuni Hirata

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Diaphragm for loud speaker

Acoustics – Diaphragm – Critically defined material or coating
Patent

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Electrical/mechanical/sound converter and apparatus of...

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Reexamination Certificate

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Engine oil composition

Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Heterocyclic ring compound; a heterocyclic ring is one...
Patent

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Engine oil composition

Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Organic compound containing boron
Reexamination Certificate

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Lubricating composition for internal combustion engine

Compositions – Electrolytes for electrical devices
Patent

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Profile ID: LFUS-PAI-P-359339

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