4. Metal working
  5. Convertible metal working machine

Royce G. Roberts

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Apparatus for cleaning large pipe threads

Metal working – Convertible metal working machine
Patent

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Gauge for tapered threaded box and pin ends of a joint

Geometrical instruments – Gauge – Screw thread
Patent

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Method and apparatus for tallying pipe

Measuring and testing – Borehole or drilling – Downhole test
Patent

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Protector removal tool

Metal working – Convertible metal working machine
Patent

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Thread cleaning device

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

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Profile ID: LFUS-PAI-P-781198

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