4. Roll or roller
  5. With specific roller exterior surface structure
  6. Surface projections, indentations, or slits

Frank Fischer-Helwig

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Circulating grinding plant comprising a mill and a sifter

Solid material comminution or disintegration – Apparatus – With separation or classification of material
Reexamination Certificate

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Sifter

Classifying – separating – and assorting solids – Fluid suspension – Gaseous
Patent

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Wear-resistant hard-surfacing for the rolls of high-pressure rol

Solid material comminution or disintegration – Apparatus – Comminuting elements
Patent

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Wear-resistant hard-surfacing for the rolls of high-pressure rol

Roll or roller – With specific roller exterior surface structure – Surface projections – indentations – or slits
Patent

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Profile ID: LFUS-PAI-P-551171

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