4. Wells
  5. Processes
  6. With indicating, testing, measuring or locating

Elmer Winckler

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Hoisting apparatus and method for raising oil tubing

Wells – Processes – Disassembling well part
Patent

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Method and apparatus for removal of oil well paraffin

Wells – Processes – Heating – cooling or insulating
Patent

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Method and apparatus for removing oil well paraffin

Wells – Processes – With indicating – testing – measuring or locating
Patent

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Towing hitch assembly

Land vehicles – Wheeled – Articulated vehicle
Reexamination Certificate

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Profile ID: LFUS-PAI-P-835421

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