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

Richard E. Andrews

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Apparatus for extraction of oil via underground drilling and...

Wells – Processes – Placing or shifting well part
Reexamination Certificate

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Building structure and method

Static structures (e.g. – buildings) – Opaque stonelike module – With traversing passage
Patent

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Gas shrouded electrode for a plasma carburizing furnace

Electric heating – Metal heating – By arc
Patent

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Unitized loading system

Patent

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Profile ID: LFUS-PAI-P-230960

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