4. Abrasive tool making process, material, or composition
  5. Impregnating or coating an abrasive tool

Alfred Hoffmann

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Apparatus for making multilayer powder blanks

Plastic article or earthenware shaping or treating: apparatus – Female mold including tamping means or means utilizing mold... – Means to rotate female mold about horizontal axis
Patent

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Ball bearing for linear motion

Cutlery
Patent

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Brake-fluid level detector

Electricity: circuit makers and breakers – Float – Float and pressure
Patent

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Linear motion ball bearing

Cutlery
Patent

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Method for grinding rough-shaped objects to a clean spherical fo

Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent

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Profile ID: LFUS-PAI-P-315499

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