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

Juhani Niinivaara

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Apparatus and method to shut down a pipeline

Wells – Processes – Perforating – weakening – bending or separating pipe at an...
Reexamination Certificate

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Apparatus for land, sea, and air defense

Ammunition and explosives – Mines – Pop-up type
Reexamination Certificate

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Method and tool for the freeing of parts held fast together

Metal working – Method of mechanical manufacture – Disassembling
Patent

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Method for the arc cutting of metal

Electric heating – Metal heating – By arc
Patent

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Method, apparatus and element for accomplishing an underwater we

Electric heating – Metal heating – Nonatmospheric environment at hot spot
Patent

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Profile ID: LFUS-PAI-P-368324

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