4. Measuring and testing
  5. With fluid pressure
  6. Porosity or permeability

Shih-Jen Chang

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Apparatus and method for testing air permeability of a fabric

Measuring and testing – With fluid pressure – Porosity or permeability
Reexamination Certificate

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Paperboard box

Envelopes – wrappers – and paperboard boxes – Paperboard box – Including a polygonal bottom wall and a curved sidewall
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Profile ID: LFUS-PAI-P-2593856

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