4. Electric heating
  5. Inductive heating
  6. Metal working

Francis Alexander Cumming

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Creating zonal isolation between the interior and exterior of a

Wells – Processes – Placing or shifting well part
Patent

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Method and device for joining oilfield tubulars

Electric heating – Inductive heating – Metal working
Patent

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System for sealing the intersection between a primary and a...

Wells – Means for guiding insertable element laterally of well axis – Secured in operative position by movable means engaging well...
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1711546

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