4. Acoustics
  5. Sound-modifying means
  6. Muffler, fluid conducting type

Wen-Pin Yeh

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Assembly of an exhaust pipe unit and a muffling device

Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent

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Projection optical system having a light blocker

Optics: image projectors – Light shield – mask – hood – or diaphragm
Reexamination Certificate

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Projector with a removable color wheel

Optics: image projectors – Color filter
Reexamination Certificate

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Profile ID: LFUS-PAI-P-518341

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