4. Pipes and tubular conduits
  5. Flexible
  6. Corrugated

Hank Chiang

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Bellows with an improved twisting capability

Pipes and tubular conduits – Flexible – Corrugated
Patent

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Freezing tank

Refrigeration – With indicator or tester – Condition sensing
Patent

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Light bulb and a light device using the same

Illumination – Self powered lamp – Flashlight elements
Patent

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Profile ID: LFUS-PAI-P-453278

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