4. Optics: measuring and testing
  5. By polarized light examination
  6. With light attenuation

Per-Ivar Fransson

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Filtering device

Liquid purification or separation – Filter – With residue removing means or agitation of liquid
Reexamination Certificate

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Method and apparatus for measuring fibre flexibility

Optics: measuring and testing – By polarized light examination – With light attenuation
Patent

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Method and apparatus for producing and testing a fiber bed

Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With testing – sampling or analyzing
Reexamination Certificate

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Method for determination of filler content in paper

Paper making and fiber liberation – Processes and products – With measuring – inspecting and/or testing
Patent

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Profile ID: LFUS-PAI-P-754179

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