4. Pipes and tubular conduits
  5. With closures and plugs
  6. Test plugs

T. D. Williamson Inc.

Corporate Assignee

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Branch fitting for providing access to the interior of a pipe

Pipe joints or couplings – End to side or plate – Saddle-type clamp
Patent

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Cam-flange

Pipes and tubular conduits – With closures and plugs – Inflation stem type
Patent

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Cleaning pig with debris flushing action

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

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Closure for a cylindrical opening having improved venting means

Receptacles – Closures – With condition responsive vent or valve
Patent

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Flag-type pig-sig

Signals and indicators – Indicators – Rotary indicator with actuating means
Patent

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Profile ID: LFUS-PAI-P-1933146

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