4. Stone working
  5. Sawing
  6. Rotary

Harry C. Wain

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Faceting device for gemstones

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

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Rim pump

Stone working – Sawing – Rotary
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Three-way vise

Work holders – Relatively movable jaws – Plural jaw pairs
Patent

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Profile ID: LFUS-PAI-P-861061

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