4. Railway switches and signals
  5. Signalling between occupants of a train

Charles C. Wallace

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Cylindrical surface profile and diameter measuring tool and meth

Geometrical instruments – Gauge – Center – point – distance between centers – or centerline location
Patent

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Gate for use in a gate valve

Fluid handling – With cleaner – lubrication added to fluid or liquid sealing... – Cleaning or steam sterilizing
Patent

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Gate valve with poppet closure

Valves and valve actuation – With means to increase head and seat contact pressure – Fluid pressure
Patent

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Robotic railroad accident prevention vehicle and associated syst

Railway switches and signals – Signalling between occupants of a train
Patent

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Profile ID: LFUS-PAI-P-967527

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