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

Franz P. Koch

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Apparatus for testing cigarettes or the like

Measuring and testing – With fluid pressure – Porosity or permeability
Patent

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Apparatus for testing cigarettes or the like

Measuring and testing – With fluid pressure – Clamp – plug – or sealing feature
Patent

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Apparatus for testing cigarettes or the like

Measuring and testing – With fluid pressure – Porosity or permeability
Patent

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Method of ascertaining the rate of fluid flow through the ventil

Measuring and testing – With fluid pressure – Porosity or permeability
Patent

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