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

Rienk Weening

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Method for working the funnel portion of a cathode ray tube

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

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Method of manufacturing a cathode ray tube

Electric lamp or space discharge component or device manufacturi – Process – With testing or adjusting
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Profile ID: LFUS-PAI-P-1095960

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