4. Gear cutting, milling, or planing
  5. Milling
  6. With regulation of operation by templet, card, or other...

Robert C. Jefferson

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Gauge for determining depth of cut in keys and the like

Geometrical instruments – Gauge – Lock or key
Patent

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Tester for key duplicating machines

Gear cutting – milling – or planing – Milling – With regulation of operation by templet – card – or other...
Patent

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Profile ID: LFUS-PAI-P-918164

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