4. Wells
  5. Brushing, scraping, cutting or punching-type cleaners
  6. Reciprocable relative to central member extending from well top
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Cleaning device for downhole tools

Wells – Brushing – scraping – cutting or punching-type cleaners – Reciprocable relative to central member extending from well top
Reexamination Certificate

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Freely slidable paraffin scraping and removing tool for cleaning

Wells – Brushing – scraping – cutting or punching-type cleaners – Reciprocable relative to central member extending from well top
Patent

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Reamer

Wells – Brushing – scraping – cutting or punching-type cleaners – Reciprocable relative to central member extending from well top
Patent

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