4. Geometrical instruments
  5. Gauge
  6. Internal

Dwane O. Laymon

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Bend detector for a pipeline pig

Geometrical instruments – Gauge – Internal
Patent

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Parabolic scraper for a pipeline pig

Brushing – scrubbing – and general cleaning – Implements – Pipe – tube – or conduit cleaner
Patent

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Pig detector

Signals and indicators – Indicators – Rectilinear indicator with actuating means
Reexamination Certificate

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Pipeline cleaner

Washing – cleaning – or drying machine – Washing – cleaning – or drying machine – Sewer or pipe cleaner
Patent

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Urethane spring for use in a pipeline pig

Brushing – scrubbing – and general cleaning – Implements – Pipe – tube – or conduit cleaner
Reexamination Certificate

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Profile ID: LFUS-PAI-P-420883

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