4. Electric heating
  5. Metal heating
  6. By arc

Erich F. Steadman

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Continuous system and method for cutting sheet material

Cutting – With control means responsive to replaceable or selectable... – Arithmetically determined program
Reexamination Certificate

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Particle size and shape distribution analyzer

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate

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System and method for perforating sheet material

Stock material or miscellaneous articles – Structurally defined web or sheet – Including aperture
Reexamination Certificate

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System and method for perforating sheet material

Electric heating – Metal heating – By arc
Patent

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Profile ID: LFUS-PAI-P-1481708

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